SSRS AX 2012 Error
SSRS AX 2012 Error: When refreshing PurchPurchaseOrder datasource on PurchPurchaseOrder Report (PO Report)
When we customize PurchPurchaseOrderReport to add a field on PurchPurchaseOrder Dataset in AOT and refresh dataset in Visual Studio.
We will get following error message:
Element':PurchPurchaseOrder.Parameters.IsPurchConfirmationRequestJournal’ has already been defined. To correct this, rename one or more of the model elements so that they have a unique name.

This is very common error and we can fix it by doing following steps:
- Prior to refreshing Dataset, we have to rename the parameter IsPurchConfirmationRequestJournal to IsPurchConfirmationRequestJournalDelete
- Change the following properties:
- nullable – True
- allow blank – True
- Now refresh the dataset you should not see any errors and a new parameter IsPurchConfirmationRequestJournal will be created. Now set the below properties of new parameter:
- allow blank – True
- Nullable – True
- Once the properties are set, now delete the parameter ‘IsPurchConfirmationRequestJournalDelete’.
- Rebuild the solution and deploy the report.
Similar kind of errors can be seen in PSAProjInvoice as well.
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