How can i execute a workflow using a bapi/wapi??
Hi All,
How can i execute a workflow using a bapi/wapi??
pls advice
thanks
Hi Hrus,
it's not as simple as a single BAPI to approve a workflow.
Workflow comes with a Workflow API (WAPI) that you can use to programmatically interact with the workflow system. The WAPI is implemented as a group of RFC-enabled function modules that are prefixed with "SAP_WAPI_".
Approving a workflow is simply taking a decision path for a workflow item. It is logically no different to rejecting the same workflow item or any other workflow decision.
As part of NetWeaver workflow is tightly coupled to the WAS platform you are running on so you may need to perform WAPI operations slightly differently on older releases.
Some of the WAPI calls you might need to use include: -
SAP_WAPI_GET_HEADER to get the workitem header
SAP_WAPI_READ_CONTAINER to get the workitem container
SAP_WAPI_GET_OBJECTS to get the attached objects
SAP_WAPI_DECISION_READ to get a list of possible decisions
SAP_WAPI_SET_WORKITEM_STATUS to set the workitem status
SAP_WAPI_WRITE_CONTAINER to write to the workitem container
SAP_WAPI_EXECUTE_WORKITEM to execute the workitem
I usually do what you are trying to do by adding the decision to the workflow container and then executing the workflow.
Be warned, you can really stuff things up if you get this wrong! Make sure you know what you are doing.
Quoting from Practical Workflow for SAP by Alan Rickayzen, et al from SAP Press...
Writing directly to the workflow container is dangerous because it can compromise the integrity of the process.
...be careful that you do not waste time duplicating existing ad hoc features of SAP's Workflow Engine.
For example you can use events (combined with wait steps), instead of container modifications to force the workflow to restart.
Cheers
Graham Robbo
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Message was edited by: Liying Wang
Message was edited by: Liying WangLiying
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