How to delete generated idoc structure?

[former_member267947]

Hi all

I tried to generate on TA /n/AIF/IDOC_GEN IDOC Structure for AIF. After the execution I've got the error message:

After press on Display Object and the program is aborted. What does the message mean? Hint: I am working on customizing CLIENT.
Note the structure is generated:

and as you can see, but it is not active. How can I delete it?

On the /AIF/TIDOC_STR, I also can see the mapping:

Thanks