How To Fix CNV_PE_GEN040 - Data model DDIC generation is supported only for table parameters

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_GEN - Messages for object generation

• Message number: 040

• Message text: Data model DDIC generation is supported only for table parameters

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_PE_GEN040 - Data model DDIC generation is supported only for table parameters ?

  The SAP error message CNV_PE_GEN040 indicates that there is an issue with the data model generation process, specifically related to the use of table parameters in the context of the Data Dictionary (DDIC) generation. This error typically arises during the execution of a conversion or migration project, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error occurs because the system is attempting to generate a data model that includes parameters that are not recognized as table parameters. In SAP, table parameters are specific types of parameters that are used to handle multiple rows of data, and the generation process expects these parameters to be defined correctly in the data model.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Parameter Definitions: Review the definitions of the parameters in your data model. Ensure that all parameters that are intended to be table parameters are correctly defined as such in the ABAP Dictionary.
  
  
  Correct Data Model: If you find any parameters that are not defined as table parameters but should be, modify their definitions accordingly. This may involve changing the parameter type in the ABAP program or data model configuration.
  
  
  Review Migration Objects: If you are using migration objects, ensure that the objects are correctly configured to use table parameters where necessary. This may involve checking the mapping and structure of the migration objects.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration or conversion process you are using. There may be additional guidelines or requirements for defining table parameters.
  
  
  Testing: After making the necessary changes, re-run the data model generation process to see if the error persists.
  
  
  SAP Support: If the issue continues after checking the above points, consider reaching out to SAP Support for further assistance. They may provide insights specific to your version of SAP or the particular migration scenario you are working with.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context. SAP Notes often contain bug fixes, workarounds, or additional guidance.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues. You can find discussions, solutions, and best practices shared by other SAP professionals.
  Documentation: Review the official SAP documentation for the tools and processes you are using, such as the SAP S/4HANA Migration Cockpit or the specific conversion tools.
  
  By following these steps, you should be able to identify the root cause of the CNV_PE_GEN040 error and implement a solution to resolve it.