How To Fix E0166 - Changes to the IDoc are written to the database

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 166

• Message text: Changes to the IDoc are written to the database

What causes this issue?

If you change the values of the <DS:GlOS.IDoc>IDoc</>, the new values
are written to the database when it is saved.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Only change the values if it is really necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0166 - Changes to the IDoc are written to the database ?

  The SAP error message E0166, which states "Changes to the IDoc are written to the database," typically occurs in the context of IDoc processing. This message indicates that there is an issue with the IDoc data that is being processed, and it is often related to the IDoc's status or the data contained within it.
  Cause:
  
  IDoc Status: The IDoc may be in a status that does not allow for changes or processing. For example, if the IDoc is already processed or in an error state, further changes may not be permitted.
  Data Integrity Issues: There may be issues with the data contained in the IDoc, such as missing mandatory fields or incorrect data formats.
  Configuration Issues: There could be configuration problems in the IDoc processing settings, such as incorrect message types or partner profiles.
  Authorization Issues: The user or process attempting to make changes may not have the necessary authorizations to modify the IDoc.
  
  Solution:
  
  Check IDoc Status: Use transaction WE02 or WE05 to check the status of the IDoc. Ensure that it is in a status that allows for processing (e.g., "03" for "Data passed to application").
  Review IDoc Data: Inspect the IDoc data for any missing or incorrect fields. Ensure that all mandatory fields are filled out correctly.
  Reprocess IDoc: If the IDoc is in an error state, you may need to correct the data and reprocess it. This can be done using transaction BD87 or by using the IDoc reprocessing options.
  Check Configuration: Review the configuration settings for the IDoc processing, including partner profiles and message types, to ensure they are set up correctly.
  Authorization Check: Ensure that the user or process has the necessary authorizations to modify the IDoc. This may involve checking user roles and permissions in the SAP system.
  
  Related Information:
  
  Transaction Codes: 
  
  WE02/WE05: To display IDocs and check their status.
  BD87: To reprocess IDocs.
  
  
  IDoc Types: Familiarize yourself with the specific IDoc type you are working with, as different types may have different requirements and configurations.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to IDoc processing and the E0166 error message.
  Documentation: Review SAP documentation on IDoc processing for best practices and troubleshooting steps.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis or technical team for further investigation.