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#### 4.2.2.2 Multi-perspective issuance corroboration CAs SHOULD implement [Section 3.2.2.9](https://github.com/cabforum/servercert/blob/main/docs/BR.md#3229-multi-perspective-issuance-corroboration) of the TLS Baseline Requirements before March 15, 2025. Effective May 15, 2025 CAs SHALL implement [Section 3.2.2.9](https://github.com/cabforum/servercert/blob/main/docs/BR.md#3229-multi-perspective-issuance-corroboration) of the TLS Baseline Requirements. This optional delay to the Phased Implementation Timeline for MPIC is intended to assist S/MIME Certificate Issuers with no TLS MPIC obligations.