Field collections referring to same object

Hello everyone, I am new to PIMCORE. I am using PIMCORE 5.6.6 (by bitnami)
I am trying to create a Field collections with object restriction to same Object.
I have saved the definition of above field collection.
While defining the data object, I am not able to save the object with the field collection.

I have defined Field collection as ParentObjA
Object is ObjA with data points as

  • objId
  • ParentObjA

Can any one help me on these. Also suggest me how to debug it out.

Thanks in advance.