Get Rest call result count evaluating to 0 even if it is 1

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HI,

 

I have an integration where I'm getting the data from DB and pushing into VBCS BO's.  So here before calling PATCH call for inserting  the data in to VBCS BO , checking if the same row already exist in the BO by using get row by using endpoint. i.e /SupplierDetails/{SupplierDetails_Id}. Next to this I places "if condition". if the count from the privious REST call  is 0 then insert else update the row.

But here if the count is 1 but entering in to Otherwise flow i.e  count = 0.0 flow and giving Bad Request error as the row already exist in the BO.