Audit procedures Vs Substantive Procedure

Short answer – no – substantive procedures are all examples of audit procedure – but there are many audit procedures that are not substantive procedures (e.g. risk assessment procedures and tests of controls).

See here:https://opentuition.com/topic/audit-substantive-analytical-procedures

“AEIOU” is a mnemonic I actually “invented” 35 years ago, to remember the “evidence gathering procedures” identified in ISA 500 Audit Evidence – it was a “cheat” at the time to use “U” for recalcUlation (but seems people remembered it!) It works pretty well for substantive procedures but for tests of controls it is reperformance (rather than recalculation), there is no “A” and “E” alone is never sufficient as a ToC (this is all covered in our notes – I do not have to hand to say on what page).