Workbook structure
Use the standard survey, choices, and settings sheets where required. Treat list_name values consistently and avoid hidden whitespace, duplicate question names, duplicate choice names within one list, and invalid formulas.
The current platform validates large XLSForms using Laravel and can use the Go XLSForm service as an accelerator.
Case handling
Reference-list matching should not depend on accidental letter case where the semantic identifier is the same. Import validation should flag ambiguous or conflicting definitions rather than silently discarding them.
Test complex logic
Specifically test relevance conditions, constraints, calculations, repeat groups, linked/external data, media references, and multilingual labels. A form that imports successfully can still contain a logical error.