How To Fix CC826 - Data type of parameter & is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: CC - ECM: Messages

• Message number: 826

• Message text: Data type of parameter & is not allowed

What causes this issue?

You have selected an invalid data type for the basis data element for
effectivity parameters.

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?

The following data types are allowed:
CHAR
NUMC.
Select a suitable domain in the maintenance function for basis data
elements.
The domain must use conversion exit ALPHA.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CC826 - Data type of parameter & is not allowed ?

  The SAP error message CC826, which states "Data type of parameter & is not allowed," typically occurs in the context of SAP ABAP programming, particularly when dealing with function modules, methods, or RFC (Remote Function Call) interfaces. This error indicates that the data type of a parameter being used is not compatible with the expected data type defined in the function module or method signature.
  Cause:
  
  Incompatible Data Types: The parameter being passed to a function module or method does not match the expected data type. For example, you might be trying to pass a string where an integer is expected.
  Unsupported Data Types: Certain data types, such as complex structures or specific reference types, may not be allowed in certain contexts (e.g., RFC calls).
  Parameter Definition Issues: The parameter might be defined incorrectly in the function module or method, leading to a mismatch.
  
  Solution:
  
  
  Check Parameter Types: Review the function module or method signature to ensure that the data types of the parameters you are passing match the expected types. You can do this by checking the documentation or using transaction SE37 (for function modules) or SE80 (for classes and methods).
  
  
  Data Type Conversion: If there is a mismatch, consider converting the data type of the parameter you are passing to match the expected type. For example, if a string is expected, ensure that you are passing a string and not an integer.
  
  
  Use Compatible Structures: If you are passing structures, ensure that the structure you are using is compatible with the expected structure in the function module or method.
  
  
  Debugging: Use the ABAP debugger to step through the code and inspect the values and types of the parameters being passed. This can help identify where the mismatch occurs.
  
  
  Consult Documentation: If you are using standard SAP function modules, refer to the SAP documentation or help portal for details on the expected parameter types.
  
  
  Related Information:
  
  Transaction Codes: Use SE37 for function modules, SE80 for classes and methods, and SE11 for data dictionary objects to check the definitions.
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific function module or method you are using.
  Community Forums: Consider searching or posting on SAP Community forums for additional insights or similar experiences from other developers.
  
  By following these steps, you should be able to identify the cause of the CC826 error and implement a suitable solution.