Here we have a situation where workforce application has large volume of data and they have limitation on setting up pagination and has time out issue.
App team want to utilize webservice only for provisioning but for Aggregation they want to do file upload. Is it possible ??
Theoretically yes. you can create a DelimitedFile connector and in the prov.rule run the API calls to write.
But overall, about me, its better to find a way to read properly from API call, like using threads and partitions.