How To Fix FKKINV399 - Cannot process tax items of source document &1 &2

FKKINV399 - Overview

• Message type: E = Error

• Message class: FKKINV - Invoicing in Contract Accounts Receivable and Payable

• Message number: 399

• Message text: Cannot process tax items of source document &1 &2

Self-Explanatory Message

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FKKINV399 - Details

• The SAP error message FKKINV399 ("Cannot process tax items of source document &1 &2") typically occurs in the context of the SAP Convergent Charging or SAP Contract Accounts Receivable and Payable (FI-CA) modules. This error indicates that there is an issue with processing tax items related to a specific source document, which is identified by the placeholders &1 (document type) and &2 (document number).
  Causes:
  
  Missing Tax Configuration: The tax codes or tax configuration may not be set up correctly in the system.
  Inconsistent Data: There may be inconsistencies in the tax data associated with the source document, such as missing or incorrect tax amounts.
  Document Status: The source document may be in a status that does not allow for tax processing (e.g., it may be locked or already processed).
  Tax Jurisdiction Issues: The jurisdiction for the tax may not be defined correctly, leading to issues in tax calculation.
  Custom Code Issues: If there are custom