Custom Table on BP using AET

Hello Experts,

I am trying to create a Custom Table on BP using AET Tool, however I am facing a problem with respect to Key fields.

I have a requirement to create a Table like below:

PARTNER(Key)

FIELD1(Key)

FIELD2

And also I would need to rename the Table.

However System is creating a Table with Default Name and Default Key Fields:

RECORD GUID

OBJECT GUID

PARENT GUID

FIELD 1

FIELD 2

Could you please help me out in solving my Issue.

Thanks for the needful.

Sandeep