I am implementing a first data payment processor. Have anyone done the implementation of CAPK using Rapid Connect API of First Data?? If anyone done, plz provide the solution.
You won’t be able to build any payment integration with V4, the functionality to connect is just not there and no further development is being done on V4.
If you use V5, there is a possibility and payment integrations are actively being worked on at the moment. Whether you can connect to First Data also depends on how the API works, and if there are any PCI compliance issues.