Deep context on Acumatica's data access layer (DACs, BQL, PXProjection, PXGraph)
Authoritative SQL view patterns for GI-backed reporting
Version-specific field mappings across 25R1, 25R2, and 26R1
Known gotchas from real client deployments (virtual fields, phantom rows, multi-tenant joins)
Customization project deployment best practices for SaaS-hosted tenants