When I republish the data source on Tableau Server, it automatically creates calculated fields which contains "111111" at the end of the field. This is the second time I am facing this issue.
Because of this it breaks my whole dashboard which is built on that data source.
Appreciate your help here.
Are you editing your data source and replacing a db-table(s)/Excel-sheet(s) with another that has/have all the same columns? This issue usually happens in such scenarios.