APPC/MVS provides the following conversation callable services that TPs use to communicate in conversations. These services apply to both mapped and basic conversations, as specified on the Conversation_type parameter of the Allocate service.

Allocate

Allocate (start) a conversation with a partner TP.

Confirm

Request a confirmation, for example, that the partner has successfully received data that was sent.

Confirmed

Send a confirmation, in response to a request for confirmation.

Deallocate

Deallocate (end) a conversation.

Error_Extract

Return detailed information about errors indicated by APPC/MVS return codes.

Flush

Flush the LU's data buffer, forcing buffered data to be sent.

Get_Attributes

Get attributes of a specified conversation.

Get_Conversation

Get the current conversation and its attributes.

Get_TP_Properties

Get TP properties (TP name, LU name, user ID, profile).

Get_Type

Get the type of conversation (basic or mapped).

Post_on_Receipt

Receive asynchronous notification when data or status on particular conversation becomes available.

Prepare_to_Receive

Prepare to receive data (change to Receive state).

Receive_Immediate

Receive data immediately, including any buffered data.

Receive_and_Wait

Receive and wait for data to arrive.

Request_to_Send

Request to send data (change to Send state).

Send_Data

Send data to the partner.

Send_Error

Send error notification to the partner when the caller detects an error.

Set_Syncpt_Options

Change the APPC/MVS defaults that control syncpoint processing for protected conversations.