If you submit the import metadata job as a background job, to avoid mining circular relationships within the objects, give a proper regular expression value for objects that need to be included in the entity and select

No

for the "Mine child tables" option. If you select

Yes

for the "Mine child tables" option, you receive a warning message that automatic entity creation will not be possible.

If you import the metadata through the Enterprise Data Manager, select the objects that need to be included in the entity and then click

No

when you are asked if you want to extract metadata from the child tables of these tables.