We would like to overwrite the invoice numbers for transactions created in 2025 in order to align them with the original invoice numbers from our legacy system (SAP).
Currently, auto-generated document numbering is active in NetSuite (used for 2026 transactions), but for 2025 we would like to replace the system-generated numbers with the original SAP invoice numbers.
If we activate the “Allow Override” option, would it be possible to perform this change via a mass update or CSV import?
Additionally, are there any constraints or risks we should be aware of (e.g. impact on audit trail, duplicate numbers, or numbering gaps)?
Thank you in advance for your guidance.
