Indian and MENA merchants running ERPNext quickly hit a wall at checkout. ERPNext ships with a short list of built-in payment gateways (Razorpay, PayPal, Stripe, Braintree, PayTM), and CCAvenue — the dominant Indian aggregator carrying net-banking, UPI, EMI, wallets, and multi-currency card processing across 200+ options — is not one of them. Teams end up reconciling CCAvenue settlements by hand, pasting transaction references into Payment Entry, and losing the automatic link between an online payment and the Sales Invoice it settles. There is no native place to hold CCAvenue's working_key and access_code, no handler for its AES-encrypted response callback, and no path to tokenize a card for recurring subscriptions.

ECOSIRE builds a proper Frappe app — a versioned, bench-installable app with its own module, not a pile of loose customizations — that makes CCAvenue a first-class ERPNext payment integration. We register a CCAvenue Settings single DocType for credentials (merchant ID, access code, working key stored as Password fields), extend ERPNext's Payment Gateway framework so CCAvenue appears anywhere the platform offers online payment (Payment Request, web checkout, the portal), and implement the full request/response cycle. A @frappe.whitelist() server method builds and AES-256-CBC encrypts the order payload, redirects the payer to CCAvenue's PCI-DSS hosted page, and a second whitelisted endpoint decrypts and verifies the callback before it is allowed to touch any ledger.

On a successful, verified response the app creates or updates the linked Payment Entry against the originating Sales Invoice or Sales Order, records the CCAvenue tracking ID and payment mode, and moves the Payment Request to Paid — all through hooks.py doc events and server-side logic rather than manual data entry. Smart dynamic routing chooses the acquiring path per currency and card BIN; tokenized recurring billing stores CCAvenue's card token against a customer for subscription and repeat charges; and a scheduler event (scheduler_events in hooks.py) reconciles pending or ambiguous transactions against CCAvenue's status API so nothing is left stranded in a half-paid state. Role-based permissions and a dedicated role profile keep the working key and refund actions off-limits to ordinary users, and every gateway call is logged for audit.

Because this is build-to-order, nothing is a blind download. We start with a scoping call to confirm your ERPNext version (v15 or v16), currencies, settlement accounts, and whether you need recurring billing or one-time checkout. ECOSIRE then builds the app to your scope, proves it on a staging site through UAT, and installs it on production with a rollback plan. Typical delivery is one working week from confirmed scope. You receive the full source, a git repository handover, technical and user documentation, a training session, and a post-go-live support window.