How To Fix E0303 - IDoc '&' has syntax error

E0303 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 303

• Message text: IDoc '&' has syntax error

What causes this issue?

A syntax error occurred in the IDoc '&V1&'. Since you have set the
syntax check to active in the partner profile, the IDoc was not sent.

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?

If you want to send this IDoc despite the syntax error, you can set the
status to 'Process despite syntax error' in the status record display
for this IDoc. This IDoc can then also be sent.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0303 - IDoc '&' has syntax error ?

  The SAP error message E0303, which indicates that an IDoc has a syntax error, typically arises when there is an issue with the structure or format of the IDoc being processed. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Incorrect IDoc Structure: The IDoc may not conform to the expected structure defined in the IDoc type. This can happen if the segments or fields are missing, incorrectly formatted, or contain invalid data.
  Data Type Mismatch: If the data being sent in the IDoc does not match the expected data types (e.g., numeric fields containing alphabetic characters), it can lead to syntax errors.
  Segment Errors: If segments are incorrectly defined or if there are issues with segment delimiters, this can cause syntax errors.
  Version Mismatch: If there is a mismatch between the IDoc version being sent and the version expected by the receiving system, it can lead to syntax errors.
  
  Configuration Issues: Incorrect