z/OS MVS Programming: Writing Transaction Programs for APPC/MVS
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Granting Permission to Send

z/OS MVS Programming: Writing Transaction Programs for APPC/MVS
SA23-1397-00

When a TP in Send state receives request_to_send_received as a returned value on one of its calls to APPC/MVS, the TP can ignore the request, or grant the request by calling one of the following services:
  • Receive_and_Wait
  • Prepare_to_Receive

Any one of the above services puts the caller in Receive state and its partner in Send state. Unlike Receive_and_Wait, Prepare_to_Receive does not require a receive buffer as input.

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