Sales Invoice is not Integrating from SAP to iVend and stuck in Integration failure Log with the error message
This error usually occurs when the Document Number Series is not created in SAP B1.
So need to create Document Number series in SAP B1 -> restart the Integration service -> And Retry the failed Records
It is suggested to define the document number series in SAPB1 for those documents, integrating from iVend to SAPB1.