How To Fix WP312 - Processing function missing for segment & (function & /&)

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 312

• Message text: Processing function missing for segment & (function & /&)

What causes this issue?

The parser is not familiar with any processing function for segment &
of the IDoc to be processed.

System Response

The system cannot process the IDoc. The documents in the SAP system are
not booked.

How to fix this error?

There may be a number of reasons for the problem. Check whether the
correct processing functions were assigned to the IDoc category via
definition of the workflow transaction. If the problem cannot be solved
this way, it is a program error. In this case, inform the SAP Hotline.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP312 - Processing function missing for segment & (function & /&) ?

  The SAP error message:
  WP312 Processing function missing for segment & (function & /&)
  typically occurs during the processing of HR infotype data, especially when dealing with HR master data or personnel actions in transaction PA30, PA40, or during batch input sessions.
  
  Cause
  
  The error indicates that the system cannot find a processing function (module or routine) assigned to a particular segment of the data being processed.
  In SAP HR, each infotype segment must have an associated processing function that handles the data input, validation, and update.
  This usually happens if:
  The processing function for the infotype segment is missing or not assigned in the Personnel Action (PA) or Personnel Administration (PA) customizing.
  The infotype or subtype is not properly configured in the Personnel Actions or Personnel Administration customizing.
  A custom infotype or segment is being processed but the corresponding processing function has not been implemented or linked.
  The batch input or data migration program is calling an infotype segment