Loan accounting query

Currently i have a same type of work experience i have conducted a audit of Power Company there was same situation where the company(Holding) is paying liability of subsidiary company hence it is possible that the holding comapny may pay the liability of subsidiary company and at a periodical interval the comapnies making IBA(Inter Branch Aadvice) for reconciliation of the same.

This is not a transaction of a company having a branch of itself. It is transaction between two seperate entities. i.e. a subsidiary & holding co have differnet identities.

If the holding co is making payment on behalf of its subsidiary, it  can do so. But necesssary disclosures shud be made in the Asset Register of teh subsidiary company.  Is there any specific reason for the holding co making payment for its subsidiary.