Temporary table for & has been deleted

What causes this issue?

When a table is converted, its data are unloaded for the duration of
the conversion to a temporary table with the name QCM<Table_name>.
After the conversion has been completed succesfully the data are
reloaded to the original table. The temporary table is preserved for
the time being as a precaution. When another conversion is made, this
temporary table is deleted in the first step.

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?

No action necessary.

Error message extract from SAP system. Copyright SAP SE.