How To Fix CNV_PE_CHECK123 - Primary relation must be flagged for at least one structural mapping item

CNV_PE_CHECK123 - Overview

• Message type: E = Error

• Message class: CNV_PE_CHECK - Check Framework messages for posting engine

• Message number: 123

• Message text: Primary relation must be flagged for at least one structural mapping item

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.

CNV_PE_CHECK123 - Details

• The SAP error message CNV_PE_CHECK123 indicates that in the context of a data migration or conversion process, the primary relation (or primary mapping) must be flagged for at least one structural mapping item. This error typically arises during the execution of a data migration project, particularly when using SAP's Conversion Tools or the SAP S/4HANA Migration Cockpit.
  
  Cause:
  The error occurs when:
  
  No Primary Relation Defined: There is no primary relation defined for the structural mapping items in the migration project.
  Incorrect Mapping Configuration: The mapping configuration may not have been set up correctly, leading to the absence of a primary relation.
  Missing Flags: The required flags for the primary relation in the mapping items are not set, which is necessary for the migration process to identify the main relationship between the data entities.
  
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Mapping Configuration:
  
  Go to the mapping configuration in the migration tool you are using