How To Fix WS170 - Internal error compiling communication structure for item &1 of doc. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 170

• Message text: Internal error compiling communication structure for item &1 of doc. &2

What causes this issue?

almost the same as WS 168, WS 169
Communication structure MCWBRL for item &V1& of document &V2&
(settlement document list or similar) could not be compiled.
Without the communication structure, it is not possible to update data
in the Logistics Information System.

System Response

No update is carried out for any of the documents currently being
processed. Data is not updated in the Logistics Information System for
either Settlement Management itself or subsequent settlement.

How to fix this error?

Contact your system administrator, as this situation should not occur.
It is probably due to a program error.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WS170 - Internal error compiling communication structure for item &1 of doc. &2 ?

  The SAP error message:
  WS170 Internal error compiling communication structure for item &1 of doc. &2
  typically occurs during IDoc processing or ALE/EDI communication when SAP tries to compile or generate the communication structure for a particular IDoc segment or item but encounters an internal inconsistency or error.
  
  Cause
  
  Inconsistent or incorrect IDoc segment definitions: The communication structure for the IDoc segment (item &1) in the document (doc. &2) cannot be compiled due to inconsistencies in the segment definition or metadata.
  Corrupted or outdated IDoc metadata: The metadata or dictionary objects related to the IDoc segment might be corrupted or not properly generated.
  Transport or system inconsistencies: If IDoc segment definitions or related objects were transported incorrectly or incompletely between systems, this error can occur.
  Custom segments or extensions: If custom segments or extensions have been added but not properly activated or generated, the system may fail to compile the communication structure.
  Missing or incorrect data in the