How To Fix GPSC056 - Period already posted - Volume or Master data may have changed since

SAP Error Message - Details

• Message type: E = Error

• Message class: GPSC - PSC Application

• Message number: 056

• Message text: Period already posted - Volume or Master data may have changed since

What causes this issue?

This Period is already posted. The Print functionality recalculates all
values. Master Data (Rules, Schemas, Assignments) may have changed
since posting and could lead to different results.
Volumes and Product Assignments are locked against changes when used
in PSC postings, but Calculation Schemes and Rollup Rules may have
changed.

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?

Please compare with stored PSC document (Report Document display by
Period)

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 GPSC056 - Period already posted - Volume or Master data may have changed since ?

  The SAP error message GPSC056 ("Period already posted - Volume or Master data may have changed since") typically occurs in the context of SAP's Global Trade Services (GTS) or similar modules where data integrity is crucial for financial and operational reporting. This error indicates that an attempt is being made to post or modify data in a period that has already been closed or finalized, which can lead to inconsistencies in reporting and data integrity.
  Causes:
  
  Closed Posting Period: The most common cause is that the posting period for the transaction has already been closed. This means that no further changes can be made to the data for that period.
  Master Data Changes: Changes to master data (like customer, vendor, or material master records) that affect the transaction may have occurred after the period was closed.
  Volume Data Changes: Similar to master data, if volume data (like sales orders, deliveries, etc.) has been modified after the period was closed, it can trigger this error.
  Configuration Issues: Incorrect configuration settings in the system regarding posting periods or data integrity checks can also lead to this error.
  
  Solutions:
  
  Check Posting Period: Verify if the posting period is indeed closed. If it is, you may need to open the period again (if your business processes allow for it) to make the necessary changes.
  Review Master and Volume Data: Investigate any changes made to master or volume data that could be causing the issue. If changes are found, consider whether they need to be reversed or if the data needs to be corrected.
  Use Transaction Codes: Utilize transaction codes like OB52 to manage posting periods or SE16 to check the relevant tables for any inconsistencies.
  Consult with Finance Team: If the period cannot be opened, consult with your finance or controlling team to understand the implications of making changes to closed periods.
  Error Logs: Check the error logs for more detailed information about what specific data is causing the issue. This can help in pinpointing the exact problem.
  SAP Notes: Look for relevant SAP Notes or documentation that may provide additional insights or patches related to this error.
  
  Related Information:
  
  SAP Documentation: Refer to SAP Help Portal for detailed documentation on handling posting periods and data integrity.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  Training: Consider training sessions for users involved in data entry and financial postings to minimize the occurrence of such errors in the future.
  
  By following these steps, you should be able to identify the root cause of the GPSC056 error and implement a suitable solution.