Error 2 when trying to set the app_key

Issue:I cannot see what the matter is with the command I am sending. The module keeps returning “ERROR:2” Documentation says Invalid parameter in the AT command.
Here is the command I am sending:

I compare it to the listed command and it has the same layout/format. I am a bit stumped

All the other commands I send works flawlessly, its just this one…

Setup: RAK4200L V3.2.0.14



I counted the characters and it seems it is 33. You are over one character. It should be only 32.
Remove one and you will not have any error. I validated it on my RAK4200 here.

Thank you!!! I also saw that now. When I build the string an extra 0 is added…

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