Message type: E = Error
Message class:  FIRU_VAT - VAT Russia S/4HANA 
Message number: 004
Message text: According to Customizing, MM documents with such data are not corrections
You have not specified this Material document type as corrective
document. You cannot use prefix COR^ in the <ZK>Document Header Text
</>(BKTXT) field.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Check your customizing settings in the
<DS:SIMG.V_T007K_RU_CI>Define Correction Invoices</> activity.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FIRU_VAT004 typically indicates that there is an issue with the VAT (Value Added Tax) processing in the context of MM (Materials Management) documents. The message suggests that the system has identified that the documents in question are not classified as corrections according to the customizing settings.
Cause: Document Type Configuration: The document type used for the MM document may not be configured to allow for VAT corrections. This can happen if the document type is set up in a way that does not permit adjustments or corrections to VAT entries. Incorrect Document Status: The document may be in a status that does not allow for VAT corrections. For example, if the document is already posted or has been processed in a way that prevents further changes. Customizing Settings: The customizing settings for VAT processing may not be aligned with the requirements for handling corrections. This could involve settings in the
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