How To Fix OE556 - SAVE op error: & unknown entries on & posting table, key= & &

OE556 - Overview

• Message type: E = Error

• Message class: OE - IS-Oil: ITA/TPI messages

• Message number: 556

• Message text: SAVE op error: & unknown entries on & posting table, key= & &

What causes this issue?

There are &V1& entries with unidentified operation codes on the &V2&
posting table. First order key is &V3&. Second order key is &V4&.

System Response

After detection of the error, the following occurred:
Changes already made to the database during the current saving process
were cancelled
The change to the database which caused the error was cancelled
Any changes still to be carried out during the current saving process
were cancelled.

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OE556 - SAVE op error: & unknown entries on & posting table, key= & & ?

  The SAP error message OE556, which states "SAVE op error: & unknown entries on & posting table, key= & &," typically occurs during the posting of documents in the SAP system. This error indicates that there are unknown or invalid entries in the specified posting table, which prevents the successful saving of the operation.
  Causes:
  
  Data Integrity Issues: The error may arise due to inconsistencies or corruption in the data within the posting table.
  Missing Master Data: The entries being posted may reference master data (like accounts, cost centers, etc.) that do not exist or are not properly configured in the system.
  Configuration Errors: Incorrect configuration settings in the relevant modules (like FI, CO, etc.) can lead to this error.
  Custom Code Issues: If there are custom enhancements or user exits that manipulate the posting process, they may introduce errors.
  Transport Issues: If recent transports have been made, they may have introduced inconsistencies in the system.
  
  Solutions:
  
  Check