3439672 - Exception Appears While Posting Supplier Invoice Document

You have created a supplier invoice document however below error appears while posting the invoice document.  

Info - The purchase document with item does not exist or is inactive; or the supplier, buying company, product, product category, or product type differs from that in the supplier invoice.

Error - Purchase document locked (KBA: 1753395)

SAP Business ByDesign

1. Go to Supplier Invoicing work center
2. Go to Invoices and Credit Memos view
3. Select the relevant Supplier Invoice 
4. Select Edit button and navigate to Exceptions tab
5. You can see the exceptions

You have changed the item type as Material in the invoice document. And if you check the reference purchase order, the item type is Service. Hence the error message appears.

You can Void the current invoice and create a new invoice with correct item type. This should allow you to post the invoice. 

Purchase document locked (KBA: 1753395); The purchase document with item does not exist or is inactive; or the supplier, buying company, product, product category, or product type differs from that in the supplier invoice. , KBA , SRD-SRM-PRO , Purchase Requests and Orders , Problem