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

CC826 - Overview

• 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.

CC826 - Details

• 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