• Do I Need A New Application ID For Each Installation?

    We have a developer license and application ID which we have used to create a connector that pulls data from an ERP into Sage 50. It runs as a windows service. It has worked well on all our development boxes. Yesterday, we tried to install the windows…
  • ValidationException when building CustomerCreditMemo - Sage 50 SDK .NET

    Greetings all, We use the .NET SDK for Sage 50 to integrate our software with Sage 50. I've got a situation where we're trying to make a Credit Memo in our software to push over in to sage 50. During a relatively routine step, we are getting a Sage ValidationException…
  • Sage 2018 - upgraded to 2019 and then downgraded back to 2018, now API won't work

    We have written a program for one of our clients using the Sage Peachtree API. Every time they upgrade versions, we always have to get the latest DLLs and rebuild our app to make it work again. However recently they say that they installed Sage 2019,…
  • CriptographicException and System.InvalidOperationException

    I can hit all the sample databases and my private database locally; however, when deployed I get this exception: System.Security.Cryptography.CryptographicException","StackTrace": " at Sage.Peachtree.API.PeachtreeSession.VerifyOrRequestAccess(CompanyIdentifier…
  • Sage 50 2016 SDK - The type or namespace name 'Sage' could not be found (are you missing a using directive or an assembly reference?)

    Hi, I tried to connect to Sage 50 2016 but It is impossible, when I compile my code, I get this error: Error 4 The type or namespace name 'Sage' could not be found (are you missing a using directive or an assembly reference?) It is a little weird…