P-Card Implementation PD570

We currently are utilizing a P-Card program through our bank and are processing the monthly statement electronically through an upload into our GL. By doing this, we are missing the vendor spend that we would normally get through the process of AP and would like to do that through the PD module. We would like to continue administering our P-Cards at the bank level, not in Lawson. Do we have to maintain P-Card users in Lawson via the PD10.2 program in order to upload transactional data transmitted to us from the bank? We attempted to use PD570 in our test environment to test the process of moving one record from the bank into our AP but continue to receive "PCard number is invalid". Must we upload all of our PCard numbers and Users into PD10.2?