Question

We would like to know the API call, which we need to use to get the current status of the batch.

Answer

GetBatch method can be used to return information about a specific batch, including StageExternalId field.

The enumerators of the build-in stages can be found in Online Help: Processing Stage. If a project has custom stages, check the dbo.ProcessingStage in the FlexiCapture 12 database to know what stage has the returned external id.

If in the workflow settings some stages have Wait for all documents of a batch option disabled then consider getting the information about the processing stage per each document in the batch rather than for the whole batch to cater to scenarios where documents within one batch are on different stages: