Hi Karan,
The only instance I have heard of this happening is where the "Get Files" action did not include all the correct file extensions. As a default this should be "*.jpg,*.pdf,*.jpeg,*.bmp,*.png".
If this is how your action is configured and all your documents fit these formats, I'm sure why that could be.
Have you tried uploading the same documents again in a new batch? If there were still no documents in the batch, have you tried separating them out and adding them via different batches?
Thanks
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Ben Lyons
Product Consultant
Blue Prism
UK
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Ben Lyons
Principal Product Specialist - Decipher
SS&C Blue Prism
UK based