/EACC/MSG_DOC_JOURNL007 - Internal error: A key field cannot be a target field

SAP Error Message - Details

• Message type: E = Error

• Message class: /EACC/MSG_DOC_JOURNL -

• Message number: 007

• Message text: Internal error: A key field cannot be a target field

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.

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AnswerBot

• What is the cause and solution for SAP error message /EACC/MSG_DOC_JOURNL007 - Internal error: A key field cannot be a target field ?

  The SAP error message /EACC/MSG_DOC_JOURNL007 Internal error: A key field cannot be a target field typically occurs in the context of document journal entries or data processing where there is an issue with the mapping of fields in a data transfer or transformation process. This error indicates that a key field, which is essential for identifying records uniquely, is being incorrectly designated as a target field in a data operation.
  Cause:
  
  Field Mapping Issues: The error often arises when there is a misconfiguration in the mapping of fields between source and target structures. Specifically, a key field from the source is being mapped to a target field that is also a key field, which is not allowed.
  Data Model Constraints: In SAP, certain fields are designated as key fields, and these fields must maintain their uniqueness. Attempting to overwrite or map them incorrectly can lead to this error.
  Configuration Errors: Incorrect settings in the configuration of the data transfer process, such as in the Data Transfer Workbench (DTW) or other data migration tools, can lead to this issue.
  
  Solution:
  
  Review Field Mapping: Check the mapping configuration for the data transfer or transformation process. Ensure that key fields from the source are not being mapped to target fields that are also defined as key fields.
  Adjust Data Model: If necessary, adjust the data model to ensure that key fields are treated appropriately. This may involve changing the target structure or the way data is being processed.
  Consult Documentation: Refer to SAP documentation or guides related to the specific module or process you are working with. This can provide insights into the correct configuration and field usage.
  Testing: After making adjustments, perform tests to ensure that the error no longer occurs and that data is being processed correctly.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific configuration and requirements.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on how to resolve it.
  Transaction Codes: Familiarize yourself with transaction codes related to data transfer and mapping, such as LSMW (Legacy System Migration Workbench) or other relevant tools.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By carefully reviewing the mapping and ensuring that key fields are handled correctly, you should be able to resolve the error and proceed with your data processing tasks.