SA 501 is the standard that tells auditors: some items on the financial statements are extra tricky to verify, so here's exactly what you must do for each one. Think of it as a special checklist that kicks in when you're looking at inventory, litigation & claims, or segment information — three areas where management can easily hide things or make honest mistakes.
Inventory is the biggest deal here. If your client, say Rajesh & Co. Pvt. Ltd., has ₹3 crore worth of raw material lying in a warehouse, you can't just trust their stock register. SA 501 says the auditor must attend the physical inventory count (unless impracticable). You're there to observe the procedures, inspect the inventory (is it really good quality or damaged junk?), and perform your own test counts. If you can't attend on the scheduled date — say there's a flood — you must attend on an alternative date and roll back/forward the figures. If attending is genuinely impracticable (e.g. inventory is underwater in a remote mine), you must apply alternative procedures and, if those don't work, modify your opinion. Inventory held by a third party (like a warehouse) requires external confirmation or inspection.
Litigation & claims against the company — think a ₹50 lakh GST dispute or a labour court case — can become huge liabilities overnight. SA 501 requires you to design procedures to identify these: read board minutes, check legal expense accounts, review correspondence with lawyers. Most importantly, if there's a material risk, you must send a direct confirmation letter to the company's lawyer (through management). If management refuses to let you communicate with the lawyer, that's a scope limitation — potentially a qualified or adverse opinion.
Segment information (when the company reports separate business or geographic segments) needs you to verify that the methods used to allocate revenues, costs, and assets between segments are consistent and properly applied. This one is tested less frequently but appears in theory questions.
This standard is asked frequently as a 4–8 mark theory question — examiners love asking what an auditor should do when they cannot attend inventory count, or what happens if management refuses lawyer confirmation.