If program takes much time to execute synchronous FM calls, then we can send it to Queue (created in TCode SMQR) which will execute asynchronously.
Category: IDOC
IDoc with Queue Processing
IDoc with Queue Processing
Immediate/Collective IDoc Processing
Immediate/Collective IDoc Processing
Steps for Idoc Transfer between two sap systems
Steps for custom Idoc Creation & Transfer between two sap systems
SAPCODES 