Invoice scanning replaces object's attributes

[NathanCHB]

Hello experts,

I'm currently struggling because I'm trying to upload pdf files to the ByDesign invoice scanner via SAP Integration Suite and, during the scanning phase, ByDesign replaces the object's attributes with empty ones.

So first, I'm sending an Odata query to ScannedInvoiceStagingObjectCollection to create the ScannedInvoiceStagingObject with attributes in the body of my query (Supplier and Company).

Secondly, I'm calling the process function of the same service to start the scanning of the document.

Once the scanning is complete, I realise that during the process, it struggled to read the Supplier name and (rightfuly so) could'nt find the supplier in the master data, but it still replaced the Supplier that was in the Odata POST query with an empty field.

My question is this : Is there away to prevent the scanning process from replacing the ScannedInvoiceStagingObject non nulls attributes in ByDesign ? 

Thank you