How To Fix IWB_MPS015 - A structure cannot be compared with a non-structure

SAP Error Message - Details

• Message type: E = Error

• Message class: IWB_MPS - Messages for Multi-Product Support

• Message number: 015

• Message text: A structure cannot be compared with a non-structure

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IWB_MPS015 - A structure cannot be compared with a non-structure ?

  The SAP error message IWB_MPS015 indicates that there is an issue with comparing a structure to a non-structure in your ABAP code or configuration. This typically occurs when you are trying to perform an operation that requires both operands to be of the same type, but one is a structure and the other is not.
  Cause:
  
  Type Mismatch: The most common cause of this error is that you are trying to compare a structure (which is a complex data type) with a simple data type (like a string, integer, etc.) or another structure that is not compatible.
  Incorrect Field Reference: You might be referencing a field incorrectly, leading to a situation where the expected type does not match the actual type.
  Logical Errors in Code: There may be logical errors in your code where the comparison is not valid due to the way data is being handled.
  
  Solution:
  
  Check Data Types: Review the data types of the variables involved in the comparison. Ensure that both operands are of the same type (both should be structures or both should be non-structures).
  Use Correct Field References: If you are trying to compare specific fields within a structure, make sure you are referencing the fields correctly. For example, if you have a structure my_struct, you should compare my_struct-fieldname with another compatible type.
  Debugging: Use debugging tools in SAP to step through your code and identify where the type mismatch occurs. This can help you pinpoint the exact line of code causing the issue.
  Type Casting: If necessary, you can use type casting to convert one of the operands to the appropriate type, but this should be done with caution to avoid data loss or corruption.
  Review Documentation: Check the SAP documentation for the specific function or method you are using to ensure you are using it correctly.
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the different data types in ABAP, including structures, tables, and simple data types.
  SAP Community: Consider searching or posting on the SAP Community forums for additional insights or similar issues faced by other developers.
  SAP Notes: Look for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to resolve the error message IWB_MPS015 and ensure that your comparisons are valid within your ABAP code.