Hello @Andrea_Bertazzo , that field always has data in it, and upon checking the logs, I saw that qlik wasn't able to fetch any data for vendor. Up to now, I am not sure whether the problem is with the qlik product or with our ETL program. We are still investigating the cause of this recurring issue. Yesterday, the problem just got fixed by itself but we still don't know what to do how to prevent this issue from happening again. I have attached screenshots here of the logs where there are fetched data and no fetched data.
On the ETL side, every time this error occurs, I can see errors in the logs about Unknown Column in the field list. But still, we cannot trace the unknown column that it says. I am not sure if the problem is associated with this error shown on ETL logs.
