An error is encountered in Procurement Sync where a Vendor has a trailing space in the vendor name. The trailing space is not easily noticable in the Purchase Order screen, but more visible when viewing the Company Record.
To resolve the issue, open the PO that will not post, and click on the Vendor hyperlink:
Then observe the Company Name:
When ConnectWise provides the Vendor Name through the Accounting Interface (Batch Record) the trailing space is removed, and the search results returns (0) elements. Which returns the error as noted.
To resolve this issue in ConnectWise, simply remove the trailing space from the Vendor company record above, and save. This will ensure that the company can be returned when the primary and billing contacts are requested for the company.