Message type: E = Error
Message class:  ICC_FI_CN - Für die Meldungen extern vornum. Belege 
Message number: 030
Message text: Document &4 in company code &1 not yet voided
In company code &1, document lot &2, book &3, document &4 has not yet
been voided.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message ICC_FI_CN030 indicates that a document (identified by the document number) in a specific company code has not yet been voided. This error typically arises in the context of financial transactions, particularly when attempting to perform actions on a document that is expected to be voided or reversed.
Cause: Document Status: The document in question has not been voided or reversed, which means it is still active in the system. Transaction Type: The action you are trying to perform (e.g., posting a new document, reversing a document) requires the original document to be voided first. User Permissions: The user may not have the necessary permissions to void or reverse the document. System Configuration: There may be configuration settings in the SAP system that prevent the voiding of certain types of documents.
Solution: Void the Document: Navigate to the appropriate transaction code (e.g., FB08 for reversing documents) and attempt to void or reverse the document
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