Access not allowed to Data Manager after concatenate of two tables

[SA_VO]

Hello,

I have two tables with two columns each, both columns have the same title. When I try to concatenate the two tables I suddenly cannot see the Data Manager anymore and get an "Access not allowed" window. In my sheets view I do not have any fields visible (also likely due to me losing access).

I have already loaded the tables separately, I am able to create a key to link them and view the results. The issue only occurs when I concatenate these two tables.

Does anybody have an idea?

[SA_VO · Accepted solution]

I (sort of) solved my own issue:

instead of concatenating the two tables into a third table, I have concatenated Table2 directly to Table1. This solved the problem.

I am still curious if someone has an idea why I had this problem!