The Department of Financial Services (DFS) \u2014 which covers the functioning of banks, financial institutions, insurance companies and the national pension system \u2014 has requested the Reserve Bank of India (RBI) to take a final call on the Aadhaar Enabled Payment System (AePS) interchange fees fixed for banks. AePS is a mode of transaction through which bank customers can withdraw funds, check balance as well as do transactions through small ATM devices installed at outlets like kirana stores, public distribution shops, etc. The DFS had sought RBI\u2019s intervention after banks expressed their dissent over the proposed fee structure. The April circular had revised the interchange fees for every AePS transaction at 1% of the transaction amount, with a minimum charge of INR 5 and maximum of INR 15. However, the National Payments Corporation of India (NPCI), that operates retail payments and settlements systems in India, \u00a0in June held back the decision due to confronting issues around interchange fees (service fee that one bank pays to another) and sharing of costs arising from participating entities. The existing interchange rates are 0.5% for every transaction and no charges for transactions less than INR 100. A share of this interchange goes as commission to the retail partner or business correspondent in the field. \u201cSince banks and the NPCI could not come to a conclusion regarding the interchange fees, the matter had to be sent to the RBI for intervention,\u201d ET quoted a senior banker in the know of the matter. \u201cIdeally these issues should be solved within the discussion forums created by NPCI,\u201d he added. The concept of micro ATM interchange fees has always been a matter of disagreement between the banks which have a large customer base and the others which install the Micro ATM devices across rural areas. Recently, Kolkata-based public sector lender, United Bank of India (UBI) stopped AePS transaction for its users on devices installed by private banks \u2014 such as IDFC Bank, Induslnd Bank, RBL Bank and YES Bank \u2014 allegedly for round-tripping funds by the business correspondents (BCs) of these banks.