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Version Selection Logic​

To decide which protocol version to use (2.1.0, 2.2.0, or 2.3.1), always choose the highest version supported by all parties, including your system, the ACS, and the Directory Server (DS).

Examples​

  • If dsEndProtocolVersion: 2.2.0 and acsEndProtocolVersion: 2.1.0, the ACS cannot handle version 2.2.0, so you must use 2.1.0.
  • If both dsEndProtocolVersion and acsEndProtocolVersion are 2.2.0, it is safe to proceed with 2.2.0.
  • If acsStartProtocolVersion: 2.2.0 and acsEndProtocolVersion: 2.2.0, the ACS cannot process messages using 2.1.0.