The Test Key generated is sum of all the code value of the parameters maintained for the Instrument code and External Bank code (Inter-bank remittances). If no Test key maintenance is available, test key generation is skipped.

Test key generation is done upfront. The External Banks for which Test Key Maintenance is present, the Outward Remittance is not saved without the Test Key being generated.

The Test Key generation fails for Outward Remittance, if the corresponding code value of the (any) parameter is not maintained.