When the auditor identifies a deficiency in internal control that, in their professional judgement, is of sufficient importance to merit TCWG's attention, this is termed a:

1. SA 265.6 defines significant deficiency as one warranting TCWG communication. 2. It is distinct from a misstatement (which is in the financials). 3. It must be communicated in writing (SA 265.9). _Source: ICAI BoS CA Final Paper 3, Ch 3 "Risk Assessment and Internal Control"_