Message type: E = Error
Message class:  FOT_US_INT_TAX_CALC - Message class for US internal tax calculation 
Message number: 012
Message text: Tax Code Type is not defined in Record &.
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The SAP error message FOT_US_INT_TAX_CALC012 indicates that there is an issue with the tax code type not being defined in the specified record. This error typically arises in the context of tax calculations, particularly in the United States, where tax codes are essential for determining the correct tax treatment of transactions.
Cause: Missing Tax Code Definition: The tax code type referenced in the transaction is not defined in the system. This could happen if the tax code was not created or if it was deleted.
Configuration Issues: There may be a configuration issue in the tax settings, such as missing entries in the tax code table or incorrect settings in the tax calculation procedure. Data Entry Errors: The user may have entered an incorrect tax code or type in the transaction, leading to the system being unable to find a corresponding definition.
Solution: Check Tax Code Configuration: Go to the transaction code OBYZ (or the relevant configuration
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