EIS integration is mostly a data problem with a deadline attached. The ERP has to produce complete sales data in the BIR’s format, the issuing system has to be registered and tested, and every transaction has to be transmitted within the prescribed window — including the ones that fail the first time.
Your TIN with the correct branch code on every transaction, and the buyer’s where it is required.
Invoice templates and document types updated for the invoice-first regime, for goods and services alike.
Each transaction transmitted exactly once. Retries that duplicate are as much a problem as gaps.
Transmission within the BIR’s prescribed window, which rules out end-of-month batch uploads.
Credit and debit memos tied back to the invoices they adjust.
The issuing system registered with the BIR and tested for EIS, with the evidence kept.
API and OData extraction patterns for invoice data.
View SAP integration →Connector patterns for Finance & Operations.
View D365 integration →REST and interface-table extraction for both stacks.
View Oracle integration →Mid-market connectivity for multi-entity groups.
View Sage integration →Direct module integration for fast-growing businesses.
View Odoo integration →Staging-table and file-based methods for anything else.
View other integrations →