How To Fix ECCEDI102 - Formal IDoc error: first segment is not from type &2

ECCEDI102 - Overview

• Message type: E = Error

• Message class: ECCEDI - IS-U Deregulation: IDoc Processing

• Message number: 102

• Message text: Formal IDoc error: first segment is not from type &2

What causes this issue?

The system attempted to process an IDoc with type <ZH>&V1&</>, however,
the first segment has type <ZH>&V3&</> instead of the expected type
<ZH>&V2&</>.

System Response

The IDoc cannot be processed.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

ECCEDI102 - Details

• The SAP error message ECCEDI102, which states "Formal IDoc error: first segment is not from type &2," typically occurs when there is an issue with the structure or format of the IDoc being processed. This error indicates that the first segment of the IDoc does not match the expected segment type defined in the IDoc type.
  
  Cause:
  
  Incorrect IDoc Structure: The IDoc being sent or received does not start with the expected segment type. Each IDoc has a defined structure, and the first segment must match the type specified in the IDoc definition.
  IDoc Type Mismatch: The IDoc type being processed may not correspond to the data being sent. For example, if the IDoc is expected to be of type ORDERS, but the first segment is of type INVOIC, this error will occur.
  Data Corruption: The IDoc data may be corrupted or improperly formatted, leading to the first segment being unrecognized.
  
  Configuration Issues: There may