How To Fix WL860 - The callback function module must be set for work items of type E

SAP Error Message - Details

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 860

• Message text: The callback function module must be set for work items of type E

What causes this issue?

When a wait step work item (type E) was created, the parameter for the
callback function module for the callback to the workflow manager (WFM)
was not set. However, this parameter is mandatory for work items of
this type as opposed to all other work item types.

System Response

Creation of the work item was terminated.

How to fix this error?

When you create a wait step work item, always specify a callback
function module. Make sure this corresponds to the required interface.
As an example, consider the interface of the function module
SWP_CALLBACK_WI_DONE.

Error message extract from SAP system. Copyright SAP SE.