MC error: Add-on license has expired. Please contact the vendor to get a valid license

MC error: Add-on license has expired. Please contact the vendor to get a valid license

Environment: 

iVend 6.6

Problem statement:  

While logging into MC below error is coming:
Add-on license has expired. Please contact the vendor to get a valid license and continue using the product without any problem.

Symptoms:   

Below error message appeared at the time of logging in store MC



Resolution/Work Around:  

Duplicate entry in table U_LIC_SysInformation. Issue resolved after updating the duplicate record in problematic store DB.