How To Fix DMC_RT_MSG591 - The field &1 of structure &2 is not ALPHANUMERIC.

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 591

• Message text: The field &1 of structure &2 is not ALPHANUMERIC.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG591 - The field &1 of structure &2 is not ALPHANUMERIC. ?

  The SAP error message DMC_RT_MSG591 indicates that a specific field in a structure is expected to contain alphanumeric data, but the data provided does not meet this requirement. This error typically arises in the context of data migration or data transfer processes, particularly when using tools like SAP Data Migration Cockpit (DMC) or SAP S/4HANA Migration.
  Cause:
  
  Data Format Issue: The field in question is defined to accept only alphanumeric characters (letters and numbers), but the data being processed contains special characters, spaces, or is entirely numeric.
  Incorrect Mapping: The mapping of fields from the source to the target structure may be incorrect, leading to incompatible data types.
  Data Entry Error: There may be a mistake in the data entry process, where invalid characters were inadvertently included.
  
  Solution:
  
  Data Validation: Check the data being uploaded or migrated to ensure that it conforms to the alphanumeric requirement. Remove any special characters or spaces from the data.
  Correct Mapping: Review the mapping configuration in the migration tool to ensure that the source fields are correctly mapped to the target fields, and that the data types are compatible.
  Data Cleansing: If the data is coming from an external source, consider implementing a data cleansing process to ensure that all data adheres to the required format before migration.
  Use of Conversion Routines: If applicable, use conversion routines to transform the data into the required format during the migration process.
  Testing: After making corrections, perform a test migration with a small subset of data to ensure that the issue is resolved before proceeding with the full migration.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific module or tool you are using (e.g., SAP Data Migration Cockpit) for detailed guidelines on data formats and requirements.
  Data Migration Cockpit: Familiarize yourself with the features of the Data Migration Cockpit, including how to define and validate data structures.
  Error Logs: Check the error logs for additional context or related error messages that may provide further insight into the issue.
  SAP Community: Engage with the SAP Community forums for discussions and solutions related to similar issues encountered by other users.
  
  By addressing the root cause of the error and ensuring that the data meets the required format, you should be able to resolve the DMC_RT_MSG591 error effectively.