What the GP source material does and does not establish about tax and statutory reporting — the regulatory lifecycle pressure that drives timing, the Report Writer statutory outputs that must be re-homed, and the discovery this domain genuinely requires.
This module is shorter than the others in the core track, and deliberately so. The GP source material for this path establishes a great deal about accounting structure, posting behaviour, document semantics and the customisation estate. It establishes comparatively little about tax and statutory reporting.
The GP supported baseline in this path is GP 2018 R2 / 18.x under the Modern lifecycle. Enhancements, regulatory updates and technical support end on 31 December 2029, with security updates potentially continuing to 30 April 2031.
Tax appears in the posting rules rather than beside them. The sales invoice rule targets the customer posting profile summary account plus revenue design and tax. The purchase invoice rule targets the vendor posting profile summary account plus product receipt clearing, purchase variance and tax accounts.
Statutory report formats in a GP estate typically live in Report Writer. Report Writer's disposition in the customisation triage is unambiguous: low preservation, extension disposition, no conversion path.
None of the following is available from the source material. All of it is required before a localisation design can be written.
The GP regulatory lifecycle date is a programme timing constraint, because regulatory content updates end before security updates do. Tax account selection belongs in the posting crosswalk, alongside revenue, payables and clearing accounts — not in a separate late workstream.