As we are importing the documents to ABBYY through Hot folder, is there any way we can use import the documents to ABBYY without using the Hot folder but using the API calls?
Yes, Web Service API is available for FlexiCapture 12 Distributed version. You can ingest documents for processing using it. Please find the documentation here: https://help.abbyy.com/en-us/flexicapture/12/developer/api/
Some code samples can be found here: https://help.abbyy.com/en-us/flexicapture/12/developer/examples_apiexamples/