When you try to post to Microsoft GP you get the following error
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Timestamp:12/2/2014 10:35:43 AM Category:Main GP Exception Priority:1 EventId:100 Severity:Critical
Title:Exception while processing GP Upload
Message:GPPayablesInvoiceUpload.cs System.Web.Services.Protocols.SoapException: A validation exception has occurred.
Validation Errors:
- The GLAccountKey you have supplied is not set up to allow account entry
To resolve this error, please make sure all accounts on the expense report are marked to "allow entry" in Great Plains.