How To Fix 9P018 - Separation not possible; input VAT already separated for this period

SAP Error Message - Details

• Message type: E = Error

• Message class: 9P - Russia and Ukraine class messages for development

• Message number: 018

• Message text: Separation not possible; input VAT already separated for this period

What causes this issue?

You want to separate input VAT for incoming invoices included in the
UNDF tax grouping version. This is, however, not possible because the
program for input VAT separation has already been run, and there is data
stored in the database.

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?

To delete the separation entries in the database, choose <PF>Clear
Processed Invoices</> .
Note: You can only delete these entries if the system has not already
linked export invoices to incoming invoices assigned to the export
operation type during the last VAT separation. If linking has already
taken place, you have to delete the entries from the database first as
follows:
In the SAP Easy Access Menu, choose <LS>Accounting</> -> <LS>Financial
Accounting</> -> <LS>General Ledger</> -> <LS>Reporting</> -> <LS>Tax
Reports</> -> <LS>Russia</> -> <LS>Separate VAT Accounting</> ->
<LS>Link Eport Invoices</>.
Choose <PF>Clear Processed Invoices</> .

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 9P018 - Separation not possible; input VAT already separated for this period ?

  The SAP error message 9P018 ("Separation not possible; input VAT already separated for this period") typically occurs in the context of VAT (Value Added Tax) processing in SAP. This error indicates that the system is unable to perform a separation of input VAT for a specific period because the input VAT has already been separated for that period.
  Cause:
  
  Duplicate Processing: The input VAT for the specified period has already been processed and separated, which means that the system does not allow for a second separation to avoid inconsistencies.
  Period Lock: The accounting period may be locked for further changes, preventing any modifications to the VAT separation.
  Incorrect Configuration: There may be issues with the configuration settings related to VAT processing or the separation process.
  
  Solution:
  
  Check Previous Separations: Review the previous VAT separation entries for the period in question. Ensure that the separation has been completed correctly and that no duplicate attempts are being made.
  Unlock the Period: If the period is locked, you may need to unlock it to allow for changes. This typically requires authorization and should be done with caution to avoid impacting financial reporting.
  Consult Configuration: Review the configuration settings for VAT processing in your SAP system. Ensure that the settings align with your business processes and that there are no discrepancies.
  Use Transaction Codes: Utilize relevant transaction codes (like FBRA for reversing documents) to check for any related documents that may need to be addressed.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP documentation for further troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any SAP Notes related to error message 9P018 for specific patches or updates that may address the issue.
  Documentation: Review SAP documentation on VAT processing and separation to ensure compliance with best practices.
  User Forums: Engage with SAP user forums or communities where similar issues may have been discussed, providing insights or solutions from other users' experiences.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.