Hi Yildirim, De customer's application daily syncs all suppliers data with Visma.net. The errors don't always occur. The last few days the updates worked for all suppliers and yesterday they started failing again for all suppliers. I created a new test supplier through the UI, and with this I can change the supplierClassId as many times a I want. I also added a new supplier though the API, and with this I can change the supplierClassId also without problems. With one of the real suppliers, I've now tried this: - PUT with a different supplierClassId --> fails - PUT with the same supplierClassId as I can see in the UI --> works ! - PUT with a different supplierClassId --> this now also works I haven't tried the Apply Restrictions from the UI, because that will only change suppliers that have that particular ClassId assigned to it, right? Hopefully, you can find where the "Error: Another process has deleted 'Address'. " comes from? What address would that be then?
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