Hi Krish,
Posting a question is never a violation of forum rules however not marking a question as answered or helpful, if it is answered, is not a good practice.
The link you have shared means the following. I will try to explain using an example of PO.
We can configure system such that it does not trigger an output to vendor if PO is blocked in GTS. In such scenario If you have released your PO manually in GTS then it writes an entry in index in ECC for follow on function. You can schedule a batch job in ECC which will pick up all such documents and trigger follow on function automatically in this case PO output.
I hope I am able to answer your query.
regards,
Kul Vaibhav