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

DMC_GENERAL297 - Overview

• 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

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DMC_GENERAL297 - Details

• 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