Reason to Believe documentation: ensure explicit recording to validate investigations and prevent procedural quashing of proceedings. Units must record all adverse facts from data analysis in the case profile and make a logical, explicit notation of Reason to Believe, after which the Joint Commissioner must enter that notation and issue FORM GST INS-01. During investigation and search, test each point against prescribed procedures and prepare point-wise panchanama and physical verification sheets; record seized records and goods in INS-02 for inter-form verification, upload all post-check documents to the MIS module, and ensure final reports are transmitted after Proper Officer approval within the prescribed timeframe or within any duly recorded extension.