No task list exists

What causes this issue?

No task list exists for this material. This may be
because you are in the process of creating the material master record
or
because you have not yet created a task list for this material in the
system

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.