Entry of pool/cluster name not required

What causes this issue?

You specified a pool or cluster name for a structure or transparent
table. Such an entry is incorrect for this type of table.

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?

Delete the pool or cluster name. This will normally happen when the
table is activated.

Error message extract from SAP system. Copyright SAP SE.