Return on non-resident deposits reporting requires fixed-format NRD-CSR XBRL submission with prescribed codes and validations. Banks must submit monthly NRD-CSR records in a fixed 42-character XBRL format containing Bank Code, Reporting Period, Deposit Scheme, Account Type, Original and Remaining Maturity codes, Country and Account Currency SWIFT codes, Record-Type Code, and amount. Prescribed code boxes specify scheme types (FCNR, NRE, NRO), maturity classifications including an unallocated code for savings/current/unclaimed accounts, permitted currencies for FCNR(B), and record-type values. Mandatory validations govern file length, field codes, maturity consistency, non-negative record amounts, scheme-specific currency and record-type restrictions, and scheme-specific closing-balance consistency checks.