Create Mapping Specifications
Once the format for an interface is fully specified, a detailed mapping specification should be created between the external format and the FTM ISF format. The mapping specification should detail the mapping rules for population of each target field from the input.
In the case of inbound messages to FTM, the mapping specification will be from the external format to ISF. In the case of outbound messages from FTM, the mapping specification will be from ISF to the external format.