The index of the Prompt to display on the device. This parameter is required when the command is GetData. The list of valid values is contained in Appendix A. This is a JSON array of prompts in the format ["05","4D"] indicating display prompt “05” on line 1 and “4D” on line 2.
| Command | In | Out |
| Authorisation | ||
| Debit | ||
| Credit | ||
| AuthorisationReversal | ||
| Void | ||
| GetData | M | |
| Cancel | ||
| GetHMAC | ||
| GetSystemInfo |