How To Fix CNV_DMC_MC_EXCEPTION203 - Access type ôMapping onlyö should not be used for the header structure

CNV_DMC_MC_EXCEPTION203 - Overview

• Message type: E = Error

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

• Message number: 203

• Message text: Access type ôMapping onlyö should not be used for the header structure

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION203 - Access type ôMapping onlyö should not be used for the header structure ?

  The SAP error message CNV_DMC_MC_EXCEPTION203 indicates that there is an issue with the access type being used for a header structure in a data migration context, specifically when using the Data Migration Cockpit (DMC). The error message states that the access type "Mapping only" should not be used for the header structure.
  
  Cause:
  This error typically arises when:
  
  The data migration process is trying to use a mapping type that is not appropriate for the header structure.
  The configuration of the data migration object is incorrect, where the header structure is expected to have a different access type (e.g., "Read" or "Read/Write") instead of "Mapping only."
  There may be a mismatch in the expected data structure or configuration settings in the DMC.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Configuration:
  
  Review the configuration of the data migration object in the DMC. Ensure that the header structure is set up correctly and that the