@alokkanodia
this is a very late reply but better than never.
This problem is solved in a newer version (V13.11…) and later. by a feature called “Party Link”
If you are updated, check it in “Accounting Settings” (Enable Party link).
It is already integrated in the main version, but the explanation of how it works is in this link (the contributor had it as a custom app)
Double Ledger Parties (Customer / Supplier as same party) - Developers / App Development - ERPNext Forum
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