Hi Harikrishna,
I think it's quite unlikely that Decipher will be able to differentiate these documents if they are as similar as you say. The classification engine is based on general layout and consistent sections of text.
If the fields are the same though, you may only need a single DFD and you could add an extra field to read the Invoice/PO text to confirm. If there are small differences in the required fields, you could include both sets and train the extraction as required. If additional differences are required it would be worth considering the Specific Versions functionality.
Thanks
Ben
Ben Lyons
Principal Product Specialist - Decipher
SS&C Blue Prism
UK based