Datasource Xcenter goes offline when performing an Employee search

Hi,

We have our Xcenter server at v16.0.5 and some of our registers are at Xstore v16.0.0.0 and rest are at v16.0.5. When we try to attach an employee from Xcenter as a customer to the transaction our register loses communication with Xcenter. This issue occurs only with registers running on Xstore v16.0.0.0, registers with Xstore v16.0.5 are running flawlessly.

1. When we checked the xstore.log we found that response for from Xcenter for query key: TAX_EXEMPTIONS had a unrecognized message: Unrecognized message from servlet while exec query key: TAX_EXEMPTIONS Servlet message: dtv.data2.access.ObjectNotPresentException: Lookup failed for Query Key: TAX_EXEMPTIONS with params: {argPartyId=325804, argExpDate=2020-01-14 00:00:00.0, argOrganizationId=1}