How To Fix DMC_GENERAL297 - Length of key fields exceeds limit for function module target

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 297

• Message text: Length of key fields exceeds limit for function module target

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 DMC_GENERAL297 - Length of key fields exceeds limit for function module target ?

  The SAP error message DMC_GENERAL297 indicates that the length of the key fields being used in a function module exceeds the allowed limit. This error typically occurs in the context of data migration or data transfer processes, particularly when using the Data Migration Cockpit (DMC) or similar tools.
  Cause:
  
  Key Field Length Exceeded: The key fields defined in the source data or the target structure exceed the maximum length allowed by the function module or the target table.
  Data Mapping Issues: There may be a mismatch in the data mapping configuration, where the source key fields are not properly aligned with the target key fields.
  Incorrect Configuration: The configuration settings in the DMC or the data transfer process may not be set up correctly, leading to the use of oversized key fields.
  
  Solution:
  
  Check Key Field Lengths: Review the key fields in both the source and target structures. Ensure that the lengths of the key fields in the source data do not exceed the limits defined in the target structure.
  Adjust Data Mapping: If there is a mismatch, adjust the data mapping configuration to ensure that the key fields are correctly aligned and that their lengths are compatible.
  Modify Source Data: If necessary, modify the source data to truncate or adjust the key fields to fit within the allowed limits.
  Review Function Module: If you have access to the function module, check its definition to understand the key field length restrictions and ensure that your data adheres to these constraints.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module or DMC to understand any specific limitations or requirements.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error message.
  Data Migration Cockpit (DMC): Familiarize yourself with the DMC and its configuration settings, as well as best practices for data migration.
  Function Module Documentation: Review the documentation for the specific function module being used to understand its parameters and limitations.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.