Problem adding parent asin

Hello everyone,

I need your help regarding a parent ASIN that i need to add into my inventory.
All child asins are there, and are meant to be variations of that parent but the parent doesn’t show.
I have to do this because there is an errer on the listing title that seems to be coming from the parent asin.
The child asins are OK but the title that appears on amazon product searches is that of the parent (which is the wrong one).

Here is what amazon wrote to me, and I don’t know how to do this

“upon investigation we found that the value on the detail page for item name is of the parent ASIN B0B199MN7W under which the ASIN B09VC7FPJS is a child ASIN. However the parent ASIN is not present in your inventory hence we request you to kindly add the ASIN in your inventory and create the variation in order to remove this inconsistency”.

Any help would be so appreciated!

Thanks