How To Fix 37412 - In Properties, only variables of type C and string are permissible.

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 412

• Message text: In Properties, only variables of type C and string are permissible.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 37412 - In Properties, only variables of type C and string are permissible. ?

  The SAP error message 37412, which states "In Properties, only variables of type C and string are permissible," typically occurs in ABAP programming when you are trying to define a property in a class that does not conform to the allowed data types. In ABAP, properties can only be of type character (C) or string.
  Cause:
  The error is caused by attempting to declare a property in a class with a data type that is not allowed. For example, if you try to declare a property of type integer (I), floating-point (F), or any other type, you will encounter this error.
  Solution:
  To resolve this error, you need to ensure that all properties defined in your class are of type C (character) or string. Here’s how you can do that:
  
  
  Check Property Declarations: Review the property declarations in your class and ensure that they are only of type C or string.
  CLASS my_class DEFINITION.
    PUBLIC SECTION.
      DATA: my_property TYPE c LENGTH 10.  " Correct
      DATA: my_string_property TYPE string.  " Correct
      DATA: my_integer_property TYPE i.  " Incorrect
  ENDCLASS.
  
  
  Change Data Types: If you find any properties declared with unsupported data types, change them to either type C or string.
  CLASS my_class DEFINITION.
    PUBLIC SECTION.
      DATA: my_property TYPE c LENGTH 10.  " Correct
      DATA: my_string_property TYPE string.  " Correct
      " DATA: my_integer_property TYPE i.  " Remove or change this line
  ENDCLASS.
  
  
  Use Getter and Setter Methods: If you need to work with other data types, consider using getter and setter methods to handle the conversion between the property type and the desired type.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the different data types in ABAP. The character type (C) and string type are the only permissible types for properties.
  Class Definition: Review the ABAP documentation on class definitions and properties to understand the rules and best practices.
  Error Handling: Implement error handling in your code to catch and manage similar issues in the future.
  
  By following these steps, you should be able to resolve the error message 37412 and ensure that your class properties are defined correctly.