Confirm your actual statutory authority for this submission. Product membership alone does not give authority to file.

Books filing submission consequence — Technical choices must select the filing service; its supported return contract, taxpayer consent and EVC/DSC authorisation requirements must establish the actual commitment and accepted evidence. [Integrations — Filing](../../../reference/integrations.md#filing) establishes access, not this final authorisation wording. The selected service's current requirements and the CA's actual authority for the supported submission settle it.