Does IDR pick supplier's name from beginning or does it looks into subset also?

Summary:

Does IDR pick supplier's name from beginning or does it looks into subset also?

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How does IDR exactlly pick Supplier's Name from the invoice copy?
Does it should be exactly same as created in Fusion? Does it always try to read the supplier name from the very begining

For example:- If supplier name is Indigo and in system it is created as AIndigo or IndigoA, will it pick the correct supplier in such a case?

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