Message type: E = Error
Message class:  FKK_ID_PT_SIGN - Digital Signature Portugal FI-CA/IS 
Message number: 410
Message text: Missing Internal Code value (SAF-T) in customizing
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The SAP error message FKK_ID_PT_SIGN410 indicates that there is a missing internal code value related to the SAF-T (Standard Audit File for Tax) configuration in the SAP system. This error typically arises when the system is trying to generate SAF-T files for tax reporting, and it cannot find the necessary internal code that is required for the process.
Cause: Missing Configuration: The internal code for SAF-T reporting may not have been defined in the customizing settings. Incorrect Mapping: There may be incorrect or incomplete mapping of the internal codes to the relevant tax categories or accounts. Data Inconsistencies: There could be inconsistencies in the master data or transaction data that prevent the system from identifying the correct internal code.
Solution: To resolve the FKK_ID_PT_SIGN410 error, follow these steps: Check Customizing Settings: Navigate to the SAP Customizing Implementation Guide (IMG). Go to Financial Accounting (New) > Accounts Receivable and Accounts Payable > Tax on Sales/Purchases > Define Internal Codes for
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