How To Fix WL307 - End parallel branches: &2 of &3 necessary branches completed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 307

• Message text: End parallel branches: &2 of &3 necessary branches completed

What causes this issue?

The fork is completed when all &V3& required branches are completed or
the terminating condition is fulfilled (if applicable).
Terminating condition here: '&V4&'.

System Response

If the result of the step is "true", the above condition was fulfilled
and the workflow was continued after the fork. Otherwise, the system
continues to wait for the number of required branches or until one
branch fulfills the terminating condition.

Error message extract from SAP system. Copyright SAP SE.