How To Fix CNV_DMC_MC_EXCEPTION201 - The access type ôMapping onlyö is not used correctly; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

• Message number: 201

• Message text: The access type ôMapping onlyö is not used correctly; see long text

What causes this issue?

If you use the access type ?Mapping Only? to map a source structure to a
target structure, then the superordinate node of the target structure
should also use the access type ?Mapping Only?.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION201 - The access type ôMapping onlyö is not used correctly; see long text ?

  The SAP error message CNV_DMC_MC_EXCEPTION201 indicates that there is an issue with the access type "Mapping only" in the context of a data migration or conversion process. This error typically arises in the SAP Data Migration Cockpit (DMC) when the configuration for a mapping process is not set up correctly.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Incorrect Mapping Configuration: The mapping configuration may not be set up to utilize the "Mapping only" access type correctly. This could be due to missing or incorrect settings in the mapping definition.
  Incompatible Data Structure: The data structure being used may not be compatible with the "Mapping only" access type, which is intended for scenarios where data is only being mapped and not directly processed or transformed.
  Missing Required Fields: Certain required fields or parameters may not be filled in the mapping configuration, leading to this error.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Review Mapping Configuration: Check the mapping configuration in the DMC to ensure that it is set up correctly for the "Mapping only" access type. Make sure that all necessary fields and parameters are filled out.
  Check Data Structure: Ensure that the data structure you are working with is compatible with the "Mapping only" access type. If necessary, adjust the data structure or choose a different access type that fits your scenario.
  Consult Documentation: Refer to the SAP documentation or help files related to the Data Migration Cockpit for specific guidelines on using the "Mapping only" access type.
  Test with Sample Data: If possible, test the mapping with a small set of sample data to identify if the issue persists. This can help isolate the problem.
  Seek Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Training and Documentation: Familiarize yourself with the SAP Data Migration Cockpit and its functionalities through training materials or official SAP documentation.
  
  By following these steps, you should be able to identify and resolve the issue related to the CNV_DMC_MC_EXCEPTION201 error message.