How To Fix GB028 - Vector operations (&) are not allowed for this callup point

SAP Error Message - Details

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 028

• Message text: Vector operations (&) are not allowed for this callup point

What causes this issue?

You have tried to use a column-related mathematical operator. However,
column-related operators (SUM, AVG, MAX, MIN) can only be used when a
list of data is being used in parallel processing.
For this callup point, the lines of data are only processed sequentially
and you cannot therefore use column-related operators.
k?nnen.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Reset the "Parallel" indicator in the validation/substitution step.
If the field "Parallel" is not displayed, you must choose an
appropriate callup point and create a validation/substitution for this
callup point.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB028 - Vector operations (&) are not allowed for this callup point ?

  The SAP error message GB028, which states "Vector operations (&) are not allowed for this callup point," typically occurs in the context of ABAP programming, particularly when dealing with vector operations in a specific callup point where they are not permitted.
  Cause:
  The error is generally caused by attempting to perform vector operations (like using the & operator) in a context where such operations are not allowed. This can happen in various scenarios, such as:
  
  
  Incorrect Callup Point: The operation is being executed in a callup point that does not support vector operations. For example, certain function modules or methods may have restrictions on the types of operations that can be performed.
  
  
  Data Type Issues: The data types being used in the vector operation may not be compatible with the expected types for that callup point.
  
  
  Program Logic Errors: There may be a logical error in the program where vector operations are incorrectly applied.
  
  
  Solution:
  To resolve the GB028 error, consider the following steps:
  
  
  Check Callup Point: Review the documentation for the function module or method you are using to ensure that vector operations are allowed. If not, you may need to refactor your code to avoid using vector operations in that context.
  
  
  Modify Code: If vector operations are not allowed, you may need to rewrite the logic to use scalar operations or other permissible methods. For example, instead of using vector operations, you can loop through the data and perform operations on individual elements.
  
  
  Data Type Validation: Ensure that the data types being used in your operations are compatible with the expected types for the callup point. You may need to convert or cast data types appropriately.
  
  
  Debugging: Use debugging tools in SAP to trace the execution of your program and identify the exact point where the error occurs. This can help you understand the context better and make necessary adjustments.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance related to the function module or method you are using. There may be known issues or best practices that can help you avoid this error.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  ABAP Documentation: Review the ABAP programming guidelines and documentation for best practices regarding vector operations and callup points.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the GB028 error and implement a suitable solution.