created customer relationship hierarchy in fusion but not working as excepted?

Summary:

Need to know how the customer relationship hierarchy works in fusion.

created hierarchies in both DEV1 and DEV13.

In DEV13 the functionality is working as excepted (we are able to add invoice to the receipts) but in DEV1 the functionality is not working (unable to add any invoices to the receipts).

Is anything I am missing could anyone let me know.

Thanks,

Vasanthi.

Content (required):

we are in implementation phase where the above requirement is currently working in EBS would like to bring same in Fusion.

Version (include the version you are using, if applicable):

23B R13

Code Snippet (add any code snippets that support your topic, if applicable):