How To Fix FS886 - Error occured when assigning document number of external tax interface

SAP Error Message - Details

• Message type: E = Error

• Message class: FS - Messages from Tax Routines / Prenumbered Checks

• Message number: 886

• Message text: Error occured when assigning document number of external tax interface

What causes this issue?

The system could not create a number for the external tax document.

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?

The customizing for the number-range interval for the external tax
document is probably incomplete.
Please maintain the number-range interval '01' for the external tax
document. In IMG, select Financial Accounting --> Financial Accounting
Global Settings --> Tax on Sales/Purchases --> Basic Settings -->
External Tax Calculation --> Define Number Ranges for External Tax
Documents

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 FS886 - Error occured when assigning document number of external tax interface ?

  The SAP error message FS886, which states "Error occurred when assigning document number of external tax interface," typically arises in the context of tax processing within SAP, particularly when integrating with external tax systems or interfaces. This error can occur during the posting of financial documents that involve tax calculations.
  Causes of FS886 Error
  
  
  
  Configuration Issues: The external tax interface may not be properly configured in the SAP system. This could include incorrect settings in the tax configuration or missing parameters.
  
  
  Document Number Assignment: The system may be unable to assign a document number for the tax document due to issues with number ranges or document type settings.
  
  
  External Tax System Issues: If you are using an external tax calculation service, there may be issues with the service itself, such as downtime or miscommunication between SAP and the external system.
  
  
  Data Inconsistencies: There may be inconsistencies in the data being sent to the external tax