How To Fix WL747 - Attachments cannot be created for work items of type "&"

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 747

• Message text: Attachments cannot be created for work items of type "&"

What causes this issue?

The function selected is not possible for all work item types.
Attachments can only be created for work items of the following types:
Dialog work item (type W)
Workflow work item (type F)
Work queue work item (type A)
However, the work item selected has type <ZH>&V1&</>.

System Response

The action is not carried out.

Error message extract from SAP system. Copyright SAP SE.