===================
ReleaseResourcesMid
===================

    1. Central Node provides API for **ReleaseResources workflow**.
    2. **Input JSON** is as per schema detailed at - https://developer.skao.int/projects/ska-schemas/en/latest/schemas/tmc/ska-tmc-releaseresources.html
    3. The Central Node **accepts the command** if :-

        A. **Admin mode** reported by each of the system - CSP,SDP are in **ONLINE/ENGINEERING/RESERVED**
        B. **is_dish_vcc_config_set** should be set to **True**
        C. Operational **state** of central node is **ON/OFF/INIT/STANDBY/ALARM**

    4. The Central Node **rejects the command** if :-

        A. **Admin mode** reported by each of the system - CSP,SDP are in **OFFLINE** or **NOT FITTED**.
        B. **is_dish_vcc_config_set** should be set to **False**
        C. Operational **state** of central node is **FAULT/UNKNOWN/DISABLE** .

    5. The **Input JSON** is validated as below, and Command is `'Rejected'` with **exception message if they are not met** :-

        A. JSON should not be empty or malformed
        B. JSON **validation** is done with **ska-tmc-cdm**

    6. The following **state requirements** are applied for the **command execution** :-

        A. TMC Subarray is in `'observation state'` **IDLE** . If not, the command is rejected with **'ResultCode - NOT_ALLOWED'**.
        B. :term:`telescopeAvailability` is checked to ensure the subsystems (SubarrayNode, CSP and SDP) are :term:`available`

    7. The **command execution** involves below **key operations** :-

        A. `'transaction ID'` is removed from the **input JSON**
        B. The command is then invoked on the relevant TMC Subarray Node.

            - If TMC Subarray node **rejects** assign resources command , command failure is reported as **'RESULT_CODE - FAILED'** on Long Running Command Result attribute of the central node.
            - If TMC Subarray node **accepts** command , central node will wait for command completion.

    8. The Central Node **monitors the progress** of command via the **subarray ObsState transitions** and the **long running command results**.

        A. Command is **successful** when the TMC Subarray Node transitions to **EMPTY** ObsState. This is reported as **'RESULT_CODE - OK'** on Long Running Command Result attribute of the central node.
        B. Command **failure** is reported in any of the below cases as **'RESULT_CODE - FAILED'** on Long Running Command Result attribute of the central node.

            - The TMC subarray node reports **'RESULT_CODE - FAILED'** on its Long Running Command Result attribute
            - The **command times out** if TMC SubarryNode **does not transition** to **EMPTY** within the **timeout period** specified by `CommandTimeOutDefault` property specified in helm chart of TMC central node .