Unable to start a new thread in Selling forum

[Sanya]

After I fill up the form for new thread in Selling Forum and try to post it I got message "The minimum number of prefixes requirement for this forum (3) has not been met."
Please help how to fix it, thanks

 

[Gtinnel]

I’ve never sold anything on this forum so I don’t know specifics of how to pick them but it is the tags that get put into the thread title. Here is a screenshot of the selling forum and the prefixes are the colored blocks in the titles.

 

[Sanya]

I did it! Thank tou!

 

[Dburr1014]

After I fill up the form for new thread in Selling Forum and try to post it I got message "The minimum number of prefixes requirement for this forum (3) has not been met."
Please help how to fix it, thanks

You need so many meaningful posts before you can post a sell in that forum.