We have an application that is an extension of Nav to the web. The system is used for accounting and approval of invoices/credit memos. The app is written in C#, and is run on an IIS webserver. The connection to Nav is via MSMQ and NAS. The web makes a request XML-style to Nav, and gets the result back as an xml message.
The system works fine until it gets under some load (50-100 users). When that happens we get errors in the event viewer like “A field or property with the name X was not found on the selected data source”. This happens with different fields and on different pages, but it is always the same field on a particular page. I e F68 on PurchDoc.aspx, F3 on PurchDocLines.aspx, etc.
When I check the input/output xml messages from Nav theyre completly OK. Something happens on the website when it tries to read the message.
Have anyone experienced or heard of a similar issue?