How To Fix CM_SUB_MLI042 - Overwriting passed-on value assignments is not permitted

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SUB_MLI - Messages for Multilevel Inheritance

• Message number: 042

• Message text: Overwriting passed-on value assignments is not permitted

What causes this issue?

The settings in the inheritance template for the inheritance
relationship do not allow changes to passed-on data.

How to fix this error?

Set the required indicators in the inheritance template:
<LS><DS:DE.ESEFLG_DST_CHNG>Changes to target specifications
permitted</></> indicator to be allowed to overwrite value assignment
data temporarily
<LS><DS:DE.ESEFLG_INH_EXCL>Exclude from inheritance</></> to be allowed
to overwrite value assignment data permanently

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_SUB_MLI042 - Overwriting passed-on value assignments is not permitted ?

  The SAP error message CM_SUB_MLI042 indicates that there is an attempt to overwrite passed-on value assignments in a context where it is not permitted. This typically occurs in the context of SAP's configuration or programming, particularly when dealing with value assignments in a function module, method, or similar constructs.
  Cause:
  The error usually arises due to one of the following reasons:
  
  Incorrect Value Assignment: You are trying to assign a new value to a parameter that has been passed by reference, which is not allowed in the current context.
  Function Module or Method Restrictions: The function module or method you are working with has specific rules regarding how parameters can be modified.
  Data Flow Issues: There may be a misunderstanding of how data is flowing through your program, leading to attempts to overwrite values that should remain constant.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review Parameter Types: Check the parameters of the function module or method you are using. Ensure that you are not trying to overwrite parameters that are defined as "IMPORTING" or "CHANGING" when they should be "EXPORTING".
  
  
  Use Local Variables: If you need to modify a value, consider using a local variable instead of trying to overwrite the passed-on parameter. This way, you can perform your calculations or modifications without violating the rules of the function/module.
  
  
  Check Documentation: Review the documentation for the specific function module or method to understand its parameter handling and restrictions.
  
  
  Debugging: If you are unsure where the error is occurring, use the SAP debugger to step through your code and identify the exact point where the error is triggered.
  
  
  Consult with Colleagues or SAP Support: If the issue persists, consider discussing it with colleagues who have experience with the specific module or reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  SAP Documentation: Always refer to the official SAP documentation for the specific function module or method you are using to understand its parameters and expected behavior.
  SAP Community: Engage with the SAP Community forums where you can find discussions and solutions related to similar issues.
  ABAP Programming Guidelines: Familiarize yourself with ABAP programming best practices, especially regarding parameter passing and data handling.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.