List all entities (name, TRN/TIN, country, free-zone status, VAT group memberships)
ERP, billing, POS, e-commerce, legacy tools (include: name, version, hosting model, AR/AP modules)
Where stored: name, legal registration ID/type, TRN/TIN, postal address, electronic address (specify ERP tables/fields)
Where stored: name, legal registration ID/type, TRN/TIN, postal address, electronic address
Where stored: invoice number/date, type code, currency, tax accounting currency, payment terms/due date, business process type, transaction flags (free-zone, exports, e-commerce, etc.)
Where stored: item name/description, HS/HSN codes, service codes, quantity, UoM, net/gross price, discounts, tax category and rate per line
How do you distinguish: domestic, exports, free-zone, e-commerce, margin-scheme, deemed supplies (at data level)?
Sum of line nets, total net, total tax, total gross, amount due, rounding, already-paid
How do you link invoices to: prior invoices, sales orders, contracts, delivery notes, GRNs?
For each ERP/billing system, list existing interfaces (APIs, IDocs, XML, flat files, EDI) and target systems
Where and how long? (ERP, DMS, archive, other). Do you store XML/structured versions?
