Please see here for S360 versioning policy
ExternalAccessControlService: 1_7. Active version. This version can be subject to minor retro-compatible changes without warnings.
ExternalAccessControlService: 1_6. Latest frozen version. Base by default all your developments on this one.
ExternalAccessControlService: 1_5. Deprecated. This version is frozen and still supported.
ExternalAccessControlService: 1_4. Deprecated. This version is frozen and still supported.
ExternalAccessControlService: 1_3. Deprecated. This version is frozen and still supported.
ExternalAccessControlService: 1_2. Deprecated. This version is frozen and still supported.
ExternalAccessControlService: 1_1. END OF LIFE. Please consider switching to the latest version of the webservices, because this version may be removed anytime from support.
ExternalAccessControlService: 1_0. END OF LIFE. Please consider switching to the latest version of the webservices, because this version may be removed anytime from support.