What do you think is incorrect?

Not incorrect per se. I have a script from Plex Meta Manager that builds a MCU playlist bases on a list in trakt. In this list it references the show here.

Trakt info for Slingshot

When running the script, I get the following error.

Trakt Error: No TVDb ID found for Marvel's Agents of S.H.I.E.L.D.: Slingshot (2016) 

TVDb has this show under specials for Agents of S.H.I.E.L.D. In attempt to fix the issue, I created the show at TVDb, but Trakt appears to only references TMDb (my current understanding anyway) so I assume TMDb needs to point back to the new show at TVDb.

Link to The TVDB entry for Slingshot

If I'm wrong please correct me. Thanks for the help!

I can't really understand the only thing I can say is that we are not connected to TVDB so maybe another moderator can help you

Ok. I'll explore other options. Thanks for the help. Take care!

It appears that TVDb removed the Slingshot page on their site, so our page here will not reference a TVDb ID. Closing topic.

I was wondering if using 263365 as TVDB ID for Marvel's Agents of S.H.I.E.L.D.: Slingshot would be apropriate?

When clicking the magnifying glass icon next to the TVDB ID field, it opens a TVDB search page with the following URL: https://thetvdb.com/search?query=Marvel%27s+Agents+of+S.H.I.E.L.D.%3A+Slingshot

That search returns only one result: Marvel's Agents of S.H.I.E.L.D. (ID 263365). This makes sense since TVDB has categorized Slingshot under the specials for that show.

If 263365 is the correct TVDB ID, could someone update it for me? The field is currently locked and has no value.

Thanks!

No, it is not appropriate. 263365 is the TVDB Id of the "Marvel's Agents of S.H.I.E.L.D." show and not of this one. The fact that TVDB consider this one as special episodes of the big show doesn't change anything.