This exception indicates the transaction code value is not recognized in the system.
Perform the following steps in order until resolved:
1. In General Ledger > Configuration > Transaction Codes, note the transaction code associated with your grants
2. In General Ledger > Configuration > Tables, click into the Transaction Code table associated with your grants
3. Verify the transaction code listed in the record returning the exception exists and is active within the table
4. Verify the spelling is exact and no spaces are entered after the description
5. Toggle the table value from active to inactive, click OK
6. Re validate your import