Message type: E = Error
Message class:  EDOCUMENT_IN - Messages for eDocument India 
Message number: 004
Message text: Counter Party GSTIN is initial
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The SAP error message EDOCUMENT_IN004: Counter Party GSTIN is initial typically occurs in the context of electronic invoicing and compliance with Goods and Services Tax (GST) regulations in India. This error indicates that the GST Identification Number (GSTIN) for the counterparty (the vendor or customer) is not provided or is missing in the system.
Cause: Missing GSTIN: The most common cause is that the GSTIN for the counterparty (vendor or customer) has not been entered in the master data. Incorrect Master Data: The counterparty's master data may not be properly maintained, leading to an empty or incorrect GSTIN field. Data Migration Issues: If data was migrated from another system, the GSTIN might not have been transferred correctly.
Configuration Issues: There may be issues with the configuration settings in SAP related to GST.
Solution: Check Master Data: Go to the vendor or customer master data in SAP (transaction codes like XK03 for vendors or FD03 for customers). Verify that the
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