COMMUNICATION ALLOCATE: Set up connection (SAP Library - SAP Communication: CPI-C Programming (BC-CST-GW))

COMMUNICATION ALLOCATE: Set up connection

Use

COMMUNICATION ALLOCATE builds a conversation with the partner defined in the statement COMMUNICATION INIT. A session to the partner system is built and a start request for the partner program (for example, X1SA) is sent.

Activities

Syntax

COMMUNICATION ALLOCATE ID <conv_id>
[ RETURNCODE <rc> ]

Parameter Values

<conv_id>

Conversation ID (input, type C(8))

<rc>

Return code (output, type X(2))
Alternatively, you can check the value directly via SY-SUBRC.

Return Codes

Value	Explanation
CM_OK
CM_ALLOCATE_FAILURE_NO_RETRY	Resource or configuration problem (UTM: Also system log message 781)
CM_ALLOCATE_FAILURE_RETRY	Temporary problem (for example,: partner is not active)
CM_PROGRAM_PARAMETER_CHECK	Invalid conversation ID
CM_PROGRAM_STATE_CHECK	COMMUNICATION INIT call was not made

DATA: CONV_ID(8) TYPE C,
DEST(8) TYPE C VALUE 'PARTNER',
RC LIKE SY-SUBRC.
COMMUNICATION INIT ID CONV_ID
DESTINATION DEST
RETURNCODE RC.
:
COMMUNICATION ALLOCATE ID CONV_ID
RETURNCODE RC.
IF RC <> CM_OK....