##### 7.1.2.7.7 Subscriber Certificate Authority Information Access The `AuthorityInfoAccessSyntax` MUST contain one or more `AccessDescription`s. Each `AccessDescription` MUST only contain a permitted `accessMethod`, as detailed below, and each `accessLocation` MUST be encoded as the specified `GeneralName` type. The `AuthorityInfoAccessSyntax` MAY contain multiple `AccessDescription`s with the same `accessMethod`, if permitted for that `accessMethod`. When multiple `AccessDescription`s are present with the same `accessMethod`, each `accessLocation` MUST be unique, and each `AccessDescription` MUST be ordered in priority for that `accessMethod`, with the most-preferred `accessLocation` being the first `AccessDescription`. No ordering requirements are given for `AccessDescription`s that contain different `accessMethod`s, provided that previous requirement is satisfied. | __Access Method__ | __OID__ | __Access Location__ | __Presence__ | __Maximum__ | __Description__ | | -- | -- | ---- | - | - | --- | | `id-ad-ocsp` | 1.3.6.1.5.5.7.48.1 | `uniformResourceIdentifier` | MAY | \* | A HTTP URL of the Issuing CA's OCSP responder. | | `id-ad-caIssuers` | 1.3.6.1.5.5.7.48.2 | `uniformResourceIdentifier` | SHOULD | \* | A HTTP URL of the Issuing CA's certificate. | | Any other value | - | - | MUST NOT | - | No other `accessMethod`s may be used. |