API data just got blank from one day to another

[Aldryn_D]

I've got a big problem with my dataset. 

Everything was ok, untill today in the morning, when some columns in my data just got Blank (wrongly), even though my API data is returning the data correctly (checked by my IT squad).

All my dashboard which take the data from this source is now useless.

Anyone knows what could have happened and how I could solve it?

Thanks?

[ppm1 · Accepted solution]

I would check column names first. If you have an Expand Column step, check there first to make sure they match (case too).

Pat

[Aldryn_D]

That was the problem! Some user changed the column names.

Thanks!