Backend processing of Mass action request

Summary:

Hi Experts,

We have implemented a pause step before scheduling and using the below REST API to release the pause step from many order lines (across order) simultaneously.

I know it runs an ESS job in the backend to process the request.

Just trying to understand, how does it process the lines?

Is it process one after another sequentially as per the FulfillllineId mentioned in the REST API?

Does this break the provided fulfillmentLineId into batches and processes?

How much time it will take to release 1000 lines passed in one request?

https://servername/fscmRestApi/resources/version/salesOrderActionRequests

{    "ActionCode": "ORA_FOM_RELEASE_PAUSE_TASK",    "requests": [        {            "FulfillLineId": 300100611851727        },        {            "FulfillLineId": 300100611851778        },        {            "FulfillLineId": 300100611851919        }