Declaration and Initialization of a Container 
You can use macros to create or initialize a container at runtime.
A container has to be created if you program the event creation yourself and require an event container, for example.
You do not have to create a container in the following programs:
Function Module for Rule Resolution
The container is declared in the interface of the function module.
The container is called CONTAINER and is already created.
An empty internal table is created with the structure SWCONT. Use the macro following macro instruction:
SWC_CONTAINER <Container>.
You must initialize a container before you use it. This deletes all entries in the internal table. Use the macro following macro instruction:
SWC_CREATE_CONTAINER <Container>.
Note
The macros SWC_RELEASE_CONTAINER and SWC_CLEAR_CONTAINER have the same functions.