Can't access Flow Designer Changed Fields

[Yamilla Manjko]

For some reason I cannot access Flow Designer Changed Fields, I tried it in different browsers, logging out and in, in different flows and different tables and it worked a while ago but now I can't access it - does anyone know what might cause this?

[Yousaf]

Hi Yamilla,
Please check if this can help.
Using the data within the "Changed Fields" Pill 

Mark Correct and Helpful if it helps.

[Yamilla Manjko · Accepted solution]

It looks like this problem happens when the FDCollection record on the sys_complex_object table is missing. I don't know exactly what happened but I checked and the record is there and it is working again.

[Jon G1]

Well, not sure if it was when you posted this to the community, but the problem is now a known issue:  KB1703826 - In Flow designer 'FDChangeDetails' object has no parameters .

This has been making me crazy for hours. Nothing I googled was coming back with relevant results until I saw this one. As soon as I added "FDCollection" to my search, I found the KB, so many thanks for posting your outcome here so that I could find my way to the answer!