Error map

Input string was not in a correct format System.FormatException: Input string was not in a correct format

.NET · layer 4, Application & API

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Centre: this error. First ring: errors it is linked with (7). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.

1 · On your device 2 · Network 4 · Application & API 5 · Data
Input string was not in a correct format — System.FormatException: Input string was not in a correct format (.NET)Input strin…Unable to cast object of type — System.InvalidCastException: Unable to cast object of type 'X' to type 'Y' (.NET)Unable to cast obje…InputMismatchException — java.util.InputMismatchException (Scanner) (Java)InputMismatchExcept…ValueError — ValueError: invalid literal for int() with base 10: 'abc' (Python)ValueErrorDateTimeParseException — java.time.format.DateTimeParseException: Text '31/12/2024' could not be parsed at index 2 (Java)DateTimeParseExcept…invalid time value — RangeError: Invalid time value (JavaScript)invalid time valueNumberFormatException — java.lang.NumberFormatException: For input string: "x" (Java)NumberFormatExcepti…Unparseable date — java.text.ParseException: Unparseable date: "x" (Java)Unparseable dateAttributeError — AttributeError: 'X' object has no attribute 'y' (Python)AttributeErrorClassCastException — java.lang.ClassCastException: class A cannot be cast to class B (Java)ClassCastExceptionIllegalArgumentException — java.lang.IllegalArgumentException (Java)IllegalArgumentExce…ArithmeticException — java.lang.ArithmeticException: / by zero (Java)ArithmeticExceptionAccessDeniedException — java.nio.file.AccessDeniedException: /path (Java)AccessDeniedExcepti…TypeError operand — TypeError: unsupported operand type(s) for +: 'int' and 'str' (Python)TypeError operand1292 — MySQL ERROR 1292 (22007): Incorrect datetime value: 'x' for column 'y' (MySQL)129222008 — ERROR: date/time field value out of range: "31/12/2024" — HINT: Perhaps you need a different "datestyle" setting. (PostgreSQL)22008invalid_date — API Error: Invalid date format — expected ISO 8601 (YYYY-MM-DDTHH:mm:ssZ) (API)invalid_date422 — HTTP 422 Unprocessable Content (HTTP)422KeyError — KeyError: 'x' (Python)KeyErrorNullPointerException — java.lang.NullPointerException (Java)NullPointerException

Directly related (7)

Unable to cast object of type.NET

System.InvalidCastException: Unable to cast object of type 'X' to type 'Y'

An explicit cast failed because the object’s runtime type isn’t the target type.

InputMismatchExceptionJava

java.util.InputMismatchException (Scanner)

Scanner.nextInt()/nextDouble() read a token that isn’t that type.

ValueErrorPython

ValueError: invalid literal for int() with base 10: 'abc'

int() received a string that isn’t a whole number — empty, decimal, whitespace or text.

DateTimeParseExceptionJava

java.time.format.DateTimeParseException: Text '31/12/2024' could not be parsed at index 2

A java.time parse call got text that doesn’t match the expected format.

invalid time valueJavaScript

RangeError: Invalid time value

A Date is invalid (NaN), and toISOString() or a formatting library couldn’t format it.

NumberFormatExceptionJava

java.lang.NumberFormatException: For input string: "x"

A string couldn’t be parsed as a number — it’s empty, has spaces/commas, is too large, or isn’t numeric.

Unparseable dateJava

java.text.ParseException: Unparseable date: "x"

SimpleDateFormat couldn’t parse the string with its pattern.

Two steps away (12)

AttributeErrorPython

AttributeError: 'X' object has no attribute 'y'

You accessed an attribute or method that doesn’t exist on that object type.

ClassCastExceptionJava

java.lang.ClassCastException: class A cannot be cast to class B

An object was cast to a type it isn’t.

IllegalArgumentExceptionJava

java.lang.IllegalArgumentException

A method rejected an argument value as invalid.

ArithmeticExceptionJava

java.lang.ArithmeticException: / by zero

Integer division or modulo by zero.

AccessDeniedExceptionJava

java.nio.file.AccessDeniedException: /path

The OS denied a file operation to the Java process.

TypeError operandPython

TypeError: unsupported operand type(s) for +: 'int' and 'str'

An operator was used between two incompatible types, such as adding a number to a string.

1292MySQL

MySQL ERROR 1292 (22007): Incorrect datetime value: 'x' for column 'y'

A string couldn’t be converted to DATE/DATETIME — wrong format, empty string, or a zero date in strict mode.

22008PostgreSQL

ERROR: date/time field value out of range: "31/12/2024" — HINT: Perhaps you need a different "datestyle" setting.

PostgreSQL parsed a date in the wrong order (DMY vs MDY) or got an impossible value.

invalid_dateAPI

API Error: Invalid date format — expected ISO 8601 (YYYY-MM-DDTHH:mm:ssZ)

A date or timestamp in the request isn’t in the format the API expects — usually ISO 8601 with a time zone, or a Unix timestamp.

422HTTP

HTTP 422 Unprocessable Content

The request is well-formed, but the data fails validation (e.g. invalid email, missing required field).

KeyErrorPython

KeyError: 'x'

You accessed a dictionary key that doesn’t exist.

NullPointerExceptionJava

java.lang.NullPointerException

Code called a method or accessed a field on a reference that is `null`.

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