Errors

Diagnostic codes

A problem a script stops with, or is warned about, carries a stable code. The engine defines 273 of them.

The message can be reworded. The code keeps its meaning and is never reused.
235 are errors and 38 are warnings.
A message or meaning that carries a figure or a name the checks of this site hold back is not shown here. The editor in the chart shows the whole message, with the line.

Filter the codes

Diagnostic codes of the engine at `engine production@9a82bf9`
Code	Kind	Meaning
`E-CHUNK-LATE`	ERROR	Not shown on this site.
`E-CHUNK-SKEW`	ERROR	Not shown on this site.
`E-COMPILE-REPEAT`	ERROR	Calls of overloaded functions or shared method names nest so deep that compiling their arguments again for every version blows up.
`E-DT-ZONE`	ERROR	A date-time without a time zone.
`E-ENGINE-PART-UNAVAILABLE`	ERROR	A part of the engine could not be loaded or did not start: absent, unreadable, no manifest or loader registered, a file that imports a file the manifest does not list, it threw when it started. The script was not run.
`E-ENGINE-PART-VERSION`	ERROR	Not shown on this site.
`E-FMT-SPEC`	ERROR	`text.fmt` (the text of an f-text piece) was given a format it does not know.
`E-FUTURE-READ`	ERROR	A strategy looks ahead (`future = true`) on a value that is not shifted: it would trade on prices the bar did not have. A script that makes alerts gets it too when the unshifted value reaches an alert (`alert()` / `alertcondition`, directly or as the condition they run under); a look-ahead that only draws is the warning `W-FUTURE-READ`.
`E-IMPORT-COUNT`	ERROR	The script imports too many libraries.
`E-IMPORT-CYCLE`	ERROR	A library imports itself, directly or through other libraries.
`E-IMPORT-DEPTH`	ERROR	Libraries import each other too many levels deep.
`E-IMPORT-SIZE`	ERROR	The libraries the script imports are too large together.
`E-INPUT-RANGE`	ERROR	A value given for an input is above its `max`, below its `min`, not a number (or not a whole number for an `int`), or not one of its `options`: the script does not start, whoever the host is (`ScriptProgram.begin`); nothing is clamped. The message names the input and its value.
`E-LIMIT-DEPTH`	ERROR	Not shown on this site.
`E-LIMIT-DRAW`	ERROR	A drawing, polyline or point list is larger than the limit.
`E-LIMIT-HISTORY`	ERROR	Not shown on this site.
`E-LIMIT-HISTORY-STATIC`	ERROR	Not shown on this site.
`E-LIMIT-ITEMS`	ERROR	An array, map or matrix is larger than the limit.
`E-LIMIT-MEMORY`	ERROR	Not shown on this site.
`E-LIMIT-OPS`	ERROR	The budget of operations is spent.
`E-LIMIT-REGEX`	ERROR	Not shown on this site.
`E-LIMIT-TABLE`	ERROR	A table: its size, its cells, the live cells together, or a cell outside the table.
`E-LIMIT-TEXT`	ERROR	A text is longer than the limit.
`E-LIMIT-TIME`	ERROR	Not shown on this site.
`E-LOOP-STEP`	ERROR	The step of a loop is zero or `na`.
`E-MODULE-HASH`	ERROR	The text of a module is not the one its hash was taken of.
`E-MODULE-NOT-FOUND`	ERROR	A module that a script imports, or a bundle holds, is not found.
`E-ORDER-ID`	ERROR	An order id differs from one already used only in case, spaces, `_` or `-`.
`E-PERIOD-NAME`	ERROR	Not shown on this site.
`E-PERIOD-TF`	ERROR	`prior()` / `current()` of a period that is not longer than the chart's own bar (`prior(day)` on a daily or weekly chart).
`E-QTY-NA`	ERROR	The size of an order is `na`.
`E-REGEX-FEATURE`	ERROR	A pattern of `text.match` uses what the matcher does not read: a back-reference, look-ahead or look-behind, a named group, `\p{..}`, `\cX`.
`E-REGEX-HOST`	ERROR	`text.match` runs in a host that did not install the matcher (the page's engine and editor bundles only compile; the worker, the tester, the sandbox and the converter install it).
`E-REQ-CHANGED`	ERROR	The symbol or the timeframe of a request is not the same on every bar of a run: made of a price, a bar number or a name a statement writes, at compile time, or a function's parameter whose value changed (the message names the bar).
`E-REQ-LIMIT`	ERROR	Not shown on this site.
`E-REQ-UNDECLARED`	ERROR	A request names a symbol written in the script that the `uses` line does not declare.
`E-SANDBOX-BUSY`	ERROR	The sandbox queue is full.
`E-SANDBOX-CRASH`	ERROR	The process that ran the script died.
`E-SANDBOX-JOB`	ERROR	The sandbox job failed.
`E-SANDBOX-OOM`	ERROR	The sandbox stopped the script: memory.
`E-SANDBOX-TIMEOUT`	ERROR	The sandbox stopped the script: wall-clock time.
`E-SCRIPT`	ERROR	The script itself failed inside the sandbox (its own code is in `scriptCode`).
`E-SESSION-DUP`	ERROR	Not shown on this site.
`E-SESSION-NAME`	ERROR	A session name that is not declared above its use, or an empty one.
`E-SESSION-TEXT`	ERROR	The hours of a session (`HHMM-HHMM[,HHMM-HHMM…][:days]`) or a time of day (`HH:MM`) are not written in the form the chart reads, or are not written in the script.
`E-SESSION-ZONE`	ERROR	A session or a clock time names a time zone the chart does not know (it used to be read as UTC).
`E-STATE-SESSION`	ERROR	`state session` without a name while the script declares more than one session.
`E-TF-UNKNOWN`	ERROR	A text that names a timeframe is not one the chart knows: `data.series`, `data.intrabars`, `bar.time_in`, `bar.close_time_in`, `tf.changed` and `tf.to_seconds` read a text written in the script at compile time; `request.security` also reads the one it is given when it runs.
`E-TS-ZONE`	ERROR	`clock.timestamp(text)` without a time zone.
`E1001`	ERROR	A text is not closed.
`E1002`	ERROR	A tab in indentation.
`E1003`	ERROR	A colour is not written #RRGGBB or #RRGGBBAA.
`E1004`	ERROR	An unexpected character.
`E1005`	ERROR	A line is indented to a width that no block above uses.
`E1006`	ERROR	A bracket is not closed, or has no opening bracket.
`E1007`	ERROR	A number is not written correctly.
`E1008`	ERROR	An unknown escape in a text.
`E1009`	ERROR	Not shown on this site.
`E1010`	ERROR	A { or } in an f-text is not closed or not doubled.
`E1011`	ERROR	A Persian or Arabic digit (quick fix: the ASCII digit).
`E1012`	ERROR	An Arabic comma or semicolon (quick fix: the ASCII sign).
`E1013`	ERROR	A curly quote (quick fix: the ASCII quote).
`E1014`	ERROR	A look-alike sign such as a multiplication or minus sign (quick fix: the ASCII operator).
`E1020`	ERROR	Not a valid clock time.
`E1021`	ERROR	Not a valid date or time.
`E1022`	ERROR	Not a time zone the chart knows.
`E1023`	ERROR	Not shown on this site.
`E1090`	ERROR	The source is too large.
`E1091`	ERROR	The source has too many tokens.
`E1092`	ERROR	A line is too long.
`E1093`	ERROR	Brackets or indentation nested too deep.
`E2001`	ERROR	An if used as a value has no else.
`E2002`	ERROR	Something other than what the grammar expects here.
`E2003`	ERROR	A block is not indented under its first line.
`E2004`	ERROR	A block has no line.
`E2005`	ERROR	A statement does not end at the end of its line.
`E2006`	ERROR	A value was expected.
`E2010`	ERROR	A chained comparison.
`E2011`	ERROR	= where == was meant.
`E2021`	ERROR	An unknown number format in an f-text.
`E2030`	ERROR	An input has neither a type nor a literal default.
`E2031`	ERROR	An option is repeated, or a positional value follows a named one.
`E2032`	ERROR	Not shown on this site.
`E2041`	ERROR	Not shown on this site.
`E2050`	ERROR	A match arm without =>.
`E2051`	ERROR	_ is not the last arm of a match, or is given twice.
`E2052`	ERROR	Not shown on this site.
`E2070`	ERROR	An import without a version and an alias.
`E2072`	ERROR	An input is written inside a block (an `if`, a loop, a function) instead of at the top level of the file or in a group.
`E2073`	ERROR	A group lists something other than inputs.
`E2074`	ERROR	A session declared inside a block, not at the top level of the file.
`E2080`	ERROR	The file does not start with a header.
`E2081`	ERROR	The header is written twice.
`E2082`	ERROR	A header option or a line of a block is given twice.
`E2090`	ERROR	An expression nested too deep.
`E2099`	ERROR	Too many errors: the list stops.
`E2100`	ERROR	Not shown on this site.
`E2102`	ERROR	A block (`setup:`, `execution:`, `margin:`) is written twice.
`E3101`	ERROR	A name is declared twice in one function.
`E3102`	ERROR	A value is given to a name that is not declared.
`E3103`	ERROR	A value is given to a let, an input, a parameter or another name that cannot change.
`E3104`	ERROR	A function gives a value to a mut or state declared outside it.
`E3110`	ERROR	A type that an input cannot have.
`E3120`	ERROR	An id is used twice.
`E3121`	ERROR	Key or was is not a text written in the script.
`E3130`	ERROR	An option, argument or field that does not exist.
`E3131`	ERROR	A value that does not fit the option, or that must be written in the script.
`E3132`	ERROR	`future = true` in a strategy (it would trade on prices it could not have seen).
`E3133`	ERROR	A show_if or check that uses something other than inputs and constants (a let, a series, a function that keeps state, a list).
`E3134`	ERROR	A show_if that depends on itself through the inputs it names.
`E3135`	ERROR	A setting of a block (`setup:`, `execution:`, `margin:`) uses a series, a `let` or a call that keeps state: only inputs and constants of the chart are allowed.
`E3136`	ERROR	A block (`setup:`, `execution:`, `margin:`) in a file that is not a strategy, or inside another block.
`E3140`	ERROR	Return outside a function.
`E3141`	ERROR	A function returns another number of values than its type says.
`E3142`	ERROR	Break or continue outside a loop.
`E3143`	ERROR	A tuple of one length is given to another number of names.
`E3144`	ERROR	Return, break or continue leaves a block that gives a value.
`E3150`	ERROR	Not shown on this site.
`E3151`	ERROR	A function is used before its definition.
`E3160`	ERROR	A call of a function the chart does not know.
`E3161`	ERROR	More arguments than a function takes.
`E3162`	ERROR	A named argument the function does not have.
`E3163`	ERROR	Fewer arguments than a built-in function needs.
`E3164`	ERROR	An argument given twice.
`E3170`	ERROR	Not shown on this site.
`E3171`	ERROR	A name that is not declared.
`E3172`	ERROR	A name that a module does not export.
`E3173`	ERROR	`a[i]` on an array: it reads the history of the array, not its item.
`E3180`	ERROR	A strategy size or fee helper outside the strategy header.
`E3190`	ERROR	An edition this build does not support.
`E3200`	ERROR	Uses takes something other than texts written in the script.
`E3201`	ERROR	An empty array whose element type is not known.
`E3202`	ERROR	An array written out with too many items.
`E3210`	ERROR	A built-in function was called with fewer arguments than it needs.
`E3211`	ERROR	The `once` value of `alert.send()` is not one the chart knows.
`E3251`	ERROR	A session that starts and ends at the same time of day.
`E3260`	ERROR	A session used as a value, not through one of its members (`.active .start .end .index .high .low`).
`E3261`	ERROR	`prior(…)` or `current(…)` used without a field (`prior(day).high`).
`E3270`	ERROR	A unit word (`ticks`, `ms`) outside a setting of `execution(…)` in the strategy header.
`E3271`	ERROR	Not shown on this site.
`E3280`	ERROR	`state session` without the name of the session while the script declares several.
`E3281`	ERROR	`state session` in a script that declares no session.
`E3301`	ERROR	`data.` or a stateful call (`tech.`, a function that keeps state) inside a loop.
`E3302`	ERROR	A call that keeps a state stands directly in an operand that runs only when it is needed: the right side of `and`, `or` or `??`, or an arm of `if … then … else`.
`E3310`	ERROR	A function calls itself, directly or through other functions (methods included); the message lists the cycle (`a -> b -> a`).
`E3400`	ERROR	A name you declared is also an option word of the slot it stands in, and has another type: your variable wins, the slot is a mismatch.
`E3406`	ERROR	An option word of several sets (`top`, `left`, `none` ...) where nothing says which set: write the type, `let s: v_align = top`.
`E3407`	ERROR	A word the option slot does not have, with the nearest word and the list (`style = dashd`).
`E4001`	ERROR	Another symbol has no data on this chart.
`E5000`	ERROR	The engine refused a program the front end accepted (its own message).
`E5001`	ERROR	An internal error of the front end or the formatter.
`E5101`	ERROR	A session must be declared at the top of the script (not inside if, for or a function).
`E5102`	ERROR	Alert.send(… = …) must be written in the script (a text or a number), not computed or read from an input.
`E5103`	ERROR	Not shown on this site.
`E5104`	ERROR	Id must be a name written in the script, as a text: letters, digits and _, starting with a letter or _.
`E5105`	ERROR	Was must be a text written in the script: the earlier id, or several separated by spaces.
`E5106`	ERROR	Was: "…" is not a name.
`E5107`	ERROR	Was: "…" is the id itself.
`E5108`	ERROR	The id "…" is already used by ….
`E5109`	ERROR	An input's default value must be a constant.
`E5110`	ERROR	The options of an input are a list in brackets: [a, b, c].
`E5111`	ERROR	Every option of an input must be a constant.
`E5112`	ERROR	…(…) must be called on the top level of the script (not inside if, for or a function).
`E5113`	ERROR	Level(…) must be called on the top level of the script.
`E5114`	ERROR	Level(…) needs a constant price (a number or an input).
`E5115`	ERROR	Shade(…) must be called on the top level of the script.
`E5116`	ERROR	Not shown on this site.
`E5117`	ERROR	Alert.when(…) must be called on the top level of the script (not inside if, for or a function).
`E5118`	ERROR	Alert.when(…, on = …) must be the text "rises" or "level", written in the script.
`E5119`	ERROR	Data.series needs an expression to read.
`E5120`	ERROR	"…" is already declared here; give it a new value with :=.
`E5121`	ERROR	A return is only valid inside a function.
`E5122`	ERROR	"…" is not declared; declare it with = first.
`E5123`	ERROR	Only a variable or a field can be given a new value.
`E5124`	ERROR	Functions are defined at the top level of a script.
`E5125`	ERROR	Parameter "…" is listed twice.
`E5126`	ERROR	The library "…" is not in your scripts. Add it under My scripts (as a library) and try again.
`E5127`	ERROR	"…" is a function: call it with ( ).
`E5128`	ERROR	"…" is not declared.
`E5129`	ERROR	"…" is not a member of ….
`E5130`	ERROR	"…" is a function: call it with ( ).
`E5131`	ERROR	"…" is not a built-in variable this chart knows.
`E5132`	ERROR	… takes at most … argument….
`E5133`	ERROR	… has no argument "…".
`E5134`	ERROR	Create a … with ….new(…).
`E5135`	ERROR	"…" is not a function this chart knows.
`E5136`	ERROR	The library "…" has no function "…".
`E5137`	ERROR	"…" is not supported on this chart yet.
`E5138`	ERROR	Only names can be called.
`E5139`	ERROR	….copy takes the object to copy.
`E5140`	ERROR	"…" is not a method this chart knows.
`E5141`	ERROR	This constant is built from other constants too many times over (each one is used twice or more by the next). Put a value in a variable once and use that.
`E5142`	ERROR	This is a library: other scripts import it; it does not draw on its own.
`E5601`	ERROR	"…": the … is na.
`E5602`	ERROR	Index … is out of bounds (array size is …).
`E5603`	ERROR	"…": the size cannot be negative (…).
`E5604`	ERROR	Cannot call "array.pop" on an empty array.
`E5605`	ERROR	Cannot call "array.shift" on an empty array.
`E5606`	ERROR	"array.slice": from (…) is after to (…).
`E5607`	ERROR	Not shown on this site.
`E5608`	ERROR	"map.set": the key is na (a map key must have a value).
`E5609`	ERROR	Row … is out of bounds (the matrix has … rows).
`E5610`	ERROR	Column … is out of bounds (the matrix has … columns).
`E5611`	ERROR	… … is out of bounds (the matrix has … …).
`E5612`	ERROR	… … is out of bounds (the matrix has … …).
`E5613`	ERROR	"…": from_… (…) is after to_… (…).
`E5614`	ERROR	"…" needs a square matrix (this one is …x…).
`E5615`	ERROR	"matrix.new": the size cannot be negative (…x…).
`E5616`	ERROR	"…": the array has … elements but the matrix has … columns.
`E5617`	ERROR	"…": the array has … elements but the matrix has … rows.
`E5618`	ERROR	"…": the matrix has no rows.
`E5619`	ERROR	"…": the matrix has no columns.
`E5620`	ERROR	"…": a …x… matrix (… elements) cannot become …x….
`E5621`	ERROR	"…": the matrices have … and … columns.
`E5622`	ERROR	Not shown on this site.
`E5623`	ERROR	"…": the first matrix has … columns but the second has … rows.
`E5624`	ERROR	"…": the matrix has … columns but the array has … elements.
`E5625`	ERROR	"…": the power cannot be negative (…).
`E5626`	ERROR	A table needs a number of columns and rows.
`E5627`	ERROR	Unknown pivot point type "…" (Traditional, Fibonacci, Woodie, Classic, DM or Camarilla).
`E5628`	ERROR	Tech.pivot_levels: "developing" cannot be true with the Woodie type.
`E5629`	ERROR	Cannot set "…" of na.
`E5630`	ERROR	"…" cannot be set here.
`E5631`	ERROR	"…" is not a field of this value.
`E5632`	ERROR	Cannot call "…" on na.
`E5633`	ERROR	A … has no method "…".
`E5634`	ERROR	This script is an indicator: only a strategy (a strategy header at the top) places orders to test.
`E5635`	ERROR	Cannot call "…" on na (the … was never created).
`E5636`	ERROR	"…" needs …, not a ….
`E5637`	ERROR	….
`E5638`	ERROR	The script stopped (log.abort).
`E5639`	ERROR	The script calls itself too deeply.
`E5640`	ERROR	….
`E9001`	ERROR	Not shown on this site.
`E9002`	ERROR	Not shown on this site.
`W-ENGINE-ALERT-CUT`	WARNING	The message of an alert is cut to … characters.
`W-ENGINE-CONST-ARG`	WARNING	… … must be a constant written in the script; it stays at its default value.
`W-ENGINE-CURRENCY-RATE`	WARNING	Not shown on this site.
`W-ENGINE-HISTORY-OPEN`	WARNING	Dynamic lookback has no declared upper bound; execution is limited to … bars (an offset nothing in the script bounds: an input without a `max`, a parameter).
`W-ENGINE-HTF-NOT-LOADED`	WARNING	The … bars are not available yet; data.series reads na.
`W-ENGINE-HTF-RESAMPLED`	WARNING	The … bars are built from the chart's own bars (the market server sent none): they reach only as far back as the chart does.
`W-ENGINE-INDICATOR-TIMEFRAME`	WARNING	Indicator(timeframe=…) is not supported yet: the script runs on the chart's timeframe.
`W-ENGINE-LIBRARY-CHANGED`	WARNING	The library "…" changed since this script was last saved (… -> …); the script may behave differently.
`W-ENGINE-LIST-INPUT`	WARNING	The list of the input "…" cannot be read as a list: it is empty here.
`W-ENGINE-LOG-DROPPED`	WARNING	… log lines were dropped: a bar keeps … lines and a run ….
`W-ENGINE-LOWER-TF`	WARNING	Data.series of a lower timeframe reads the chart's own bars here.
`W-ENGINE-LOWER-TF-FORM`	WARNING	Data.intrabars reads the chart's own bar here (lower timeframes are not loaded).
`W-ENGINE-OTHER-SYMBOL`	WARNING	Data.series can only read this chart's symbol here; another symbol reads na.
`W-ENGINE-RANDOM-SEED`	WARNING	Math.random draws from the run seed … (script = its identity: the host's id, else the title of the header): the same identity, inputs, explicit seed and dataset id give the same numbers on every machine, whatever the text of the script is.
`W-ENGINE-REQUEST-NA`	WARNING	… is not available on this chart; it reads na.
`W-ENGINE-SOURCE-DEFAULT`	WARNING	Not shown on this site.
`W-ENGINE-STRATEGY-NOT-SIMULATED`	WARNING	Strategy orders are not simulated on the chart: open the Strategy tester to test it.
`W-ENGINE-TEXT-CUT`	WARNING	A text of a label, box or table cell is cut to … characters.
`W-ENGINE-TICKER-KIND`	WARNING	The chart kind "…" is not applied here; data.series reads the ordinary candles.
`W-ENGINE-VWAP-NO-VOLUME`	WARNING	Tech.vwap reads na: the bars of this chart have no volume.
`W-ENGINE-ZONE-UNKNOWN`	WARNING	The time zone "…" is not known; it is read as UTC.
`W-FTEXT-PLACEHOLDER`	WARNING	An alert placeholder written in an f-text.
`W-FUTURE-READ`	WARNING	A read of another timeframe asks for the future (`future = true`) on a value that is not shifted: a warning with the line and the fix; an info note when the check cannot follow the value.
`W-ID-ANON-NONASCII`	WARNING	A plot whose id comes from its position.
`W-ID-COLLISION`	WARNING	Not shown on this site.
`W-ID-LOOKALIKE`	WARNING	A name uses an Arabic letter that looks like a Persian one.
`W-INT-BOOL`	WARNING	A number used as a condition.
`W-LIVE-READ`	WARNING	A read that shows the forming bar of another timeframe (`live = true`).
`W-MATCH-OPEN`	WARNING	A match that does not cover every case.
`W-METHOD-SHADOWS-BUILTIN`	WARNING	A method of the script takes the place of a built-in one.
`W-MUT-COUNTER`	WARNING	A mut counter that starts again every bar.
`W-NA-COMPARE`	WARNING	A comparison with na, which is never true.
`W-OBJECT-LIMIT`	WARNING	Drawings, sloped fills or tables were dropped to keep the newest ones, or a drawing limit was cut to what the chart allows.
`W-REPAINT`	WARNING	The replay found a closed bar whose figures changed (error level) or a signal that came late (warning level).
`W-SHADOW-BUILTIN`	WARNING	A name hides a built-in name.
`W-SHADOW-GLOBAL`	WARNING	A name in a function hides one declared outside it.
`W-UNMODELLED`	WARNING	A setting the engine takes and does nothing with (the text says which and why).
`W3302`	WARNING	A call that keeps a state stands in a block that may not run (an `if` or `else` block, a `match` arm, a `state` initializer, the lines after a conditional `return`, `break` or `continue`): legal, and its state moves only on the bars where the block runs.