Find Busy Product Substitution Candidates

How it behaves

Use this when the user asks for possible alternatives to one exact Busy product based on currently available catalog and stock evidence. It ranks products in the same direct product group and same main unit, then exposes HSN, tax, selected-price difference, and latest synced stock evidence. Resolve a product name with busy_resolve_entity before calling. Do not present candidates as certified compatible, guaranteed replacements, historical customer co-switches, or automatic recommendations. The source contract has no authoritative compatibility certification, replacement-event history, brand, manufacturer, warehouse, branch, or territory mapping, so every candidate requires human specification and commercial verification.