Error 502: Incompatible type

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Errors

Error 502: Incompatible type

Reason

Correction

Examples

Error 1: Syntax error

Error 2: Incomplete line

Error 3: The string has no final "

Error 4: A space is required after the ':' character

Error 11: The label is unknown

Error 13: The label already exists

Error 14: ELSE statement without IF

Error 16: Incompatible CASE

Error 17: OTHER CASE must be the last statement used in SWITCH

Error 19: The step of this FOR loop must be constant

Error 20: The variable of the FOR loop should be a real

Error 22: No END statement is associated with this FOR

Error 23: No END statement is associated with this WHILE

Error 24: No END statement is associated with this LOOP

Error 25: No THEN statement is associated with this IF

Error 26: No END statement is associated with this THEN

Error 27: No END statement is associated with this ELSE

Error 28: No END statement is associated with this SWITCH

Error 30: An exception process cannot be declared inside another exception process...

Error 31: The file to include is not found. Check the name and path ...

Error 34: 'Break' is not allowed outside the loops

Error 35: 'Continue' is available in the loops only

Error 38: The END statement marking the end of the structure declaration is missing

Error 39: The END statement marking the end of declaration of the composite variable is missing

Error 40: The END statement marking the end of the class declaration is missing

Error 42: Label out of scope of GOTO

Error 101: Declaration of global variable not allowed

Error 102: The constants can be defined in the initialization code of project, ...

Error 103: The type is unknown

Error 104: 'Dynamic' can only be used for the classes and the Automation objects

Error 105: Redefinition of the local variable

Error 106: Redefinition of a global variable

Error 107: Redefinition of the parameter

Error 108: The size of the variable is not allowed

Error 109: The fixed string is too long

Error 110: The ASCIIZ string is too long

Error 111: The Pascal string %1 is too long

Error 112: An array can only have a maximum of X dimensions

Error 113: Non-dynamic array without definition

Error 116: An array dimension must be an integer value

Error 117: The array has X dimensions and you access it with Y dimensions

Error 120: Redefinition of the structure

Error 121: Shadowing a structure

Error 122: The name of an Automation object must be a string

Error 123: The constant already exists

Error 201: The method already has a virtual attribute

Error 202: The method already has an access attribute (public, protected or private)

Error 203: The procedure already has a scope attribute (local or global)

Error 204: using a parameter without optional value after parameters ...

Error 301: Unknown identifier

Error 303: ambiguous control name

Error 305: The element does not exist in the window

Error 403: The item does not belong to the file

Error 404: The file for HFSQL browse cannot be an expression of this type

Error 502: Incompatible type

Error 507: The '++' operator is not allowed

Error 530: The -- operator is not allowed

Error 531: The negative or null subscripts are not allowed

Error 532: The size of the string to extract must be strictly positive

Error 533: The expression of a { } must be a string

Error 701: The property is read-only

Error 703: The property does not exist

Error 704: The property does not exist on

Error 705: The property does not exist on this type

Error 706: The property does not exist on this type of control

Error 802: Invalid syntax for this function

Error 803: Return and Result cannot be used in the same process

Error 805: No syntax without parameter

Error 809: The * character cannot be used as mandatory parameter in a function

Error 810: * can only be used for a parameter with a default value

Error 1001: The operators: and:: can only be used in the methods of classes

Error 1003: The element does not exist in the class

Error 1004: To explicitly access an element of the base class '%1', use the syntax

Error 1005: To explicitly access a global element of '%1' class, use the syntax

Error 1006: The member is not global: use: to access it

Error 1007: The member is global: use the: operator: to access it

Error 1008: The member of the class is protected

Error 1009: The member of the class is private

Error 1010: The member of the class is constant

Error 1011: To access the global member of the class, use ClassName::MemberName

Error 1012: The class member is not global: it cannot be accessed from a global method

Error 1013: The access to the member of the class is restricted by a protected inheritance

Error 1014: The access to the member of the class is restricted by a private inheritance

Error 1015: The method of the class is protected

Error 1016: The method of the class is private

Error 1017: The method is not global: use: to access it

Error 1018: The method is global: use the: operator: to access it

Error 1021: The method of the class is not global

Error 1022: The access to the method of the class is restricted by a protected inheritance

Error 1023: The access to the method of the class is restricted by a private inheritance

Error 1029: The access to the base class is restricted by a protected inheritance

Error 1030: The access to the base class is restricted by a private inheritance

Error 1032: The inheritance is not allowed in a structure

Error 1033: The access directives are not allowed in a structure

Error 1035: A class used in a structure must have a constructor without parameter...

Error 1036: A class used in an array must have a constructor without parameter

Error 1037: This member already exists in the structure

Error 1038: This member already exists in the class

Error 1044: The class is already derived from this class

Error 1045: A class cannot be declared outside the declaration code of a class

Error 1046: Wrong parameter for the constructor of the class

Error 1048: The inheritance is not allowed in a composite variable

Error 1049: The access directives are not allowed in a composite variable

Error 1050: This member already exists in the composite variable

Error 1054: 'Ancestor' cannot be used outside the code of a class

Error 1055: 'Ancestor' can only be used in the code of a class derived from a class

Error 1060: Unable to call method without parameter: add ()

Error 2109: You are using the ObjectInfo function

Information 37: Optimize your FOR loop

Information 302: Ambiguity between a variable and a control

Information 2101: 'Short int' does not exist anymore: use 'unsigned 1-byte int'

Information 2102: 'Long' does not exist anymore: the integers are coded on 4 bytes

Information 2103: 'Double' does not exist anymore: the reals are coded on 8 bytes

Information 2104: This function is kept for backward compatibility

Information 2105: This function was renamed

The use of the Automation type in a site is reserved for the advanced users

Warning 12: The label is unused

Warning 18: Loop without potential end

Warning 36: No BREAK, RETURN or RESULT was detected in the code of the loop

Warning 124: Shadowing a global variable

Warning 127: You are using a data source local to the process

Reason
Correction
Examples
The following code tries to perform a subtraction between two character strings

WINDEV

WEBDEV

WINDEV Mobile

Others

Error 502: Incompatible type

Reason

You are trying to perform an arithmetical operation or a logical operation between two expressions of incompatible type.

Correction

This type of operation is not possible. Find the WLanguage functions allowing you to perform this operation.

Examples

The following code tries to perform a subtraction between two character strings

Code triggering the error

string1 is string
string2 is string
Trace(string1-string2)

Possible correction

No subtraction of character strings can be performed in WLanguage.

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Last update: 05/26/2022

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