I was informed this week that I would be receiving a warning letter for loading a bad bag last week. Here's apparently what happened: I stay and help clean up the belt after the sort goes down and one of my final tasks is doing the missed bag report. I normally log into one trailer and mistoggle all the missed bags into one load (shame on me, but everyone I know including supes who do missed bags do it this way). There is no way I can even confirm the bags were placed into the loads so I don't understand the point of even making us do missed bags at the end of the night. I was even told by my full time one time after a load had already left and I couldn't get an open ULD for a load to just mistoggle a bag. Well, someone must have really thrown one of the wrong bags into the load I mistoggled the bad bags into. Bag was "scanned" at 3:46, I clocked out at 3:52, and all the doors were down and sealed by the time I did the bag list. The night after I was told I getting a warning letter I am called out of a load by my FT and a shop steward. This steward as a reputation of siding the supes but I don't know the guy that well so it would be wrong of me to assume anything. She informs me formally of the missed bag report and starts going off on me about doing 3-5 package checks per bag. I tried explaining to her what had happened and she pretty much told me I couldn't prove it and it didn't matter anyway. The shop steward told me there was nothing I could do and to just sign the "documentation". I told them I didn't feel disciplining me for something I didn't physically do was unfair and was told by both the FT and steward that write ups and warning letters are NOT disciplinary actions. The steward told me I couldn't grieve a warning letter. I told them I didn't want to sign the write or sheet she had acknowledging I had scanned the bag and was told if I didn't I would be fired for insubordination by BOTH of them. I signed both documents with UNDER PROTEST written twice each on them and went on with my night. Now I'm being told by fellow hourly's I didn't have to sign anything, I can grieve the warning letter, and possibly appeal the warning letter. I read the union contract and Article 50 of the Atlantic supplemental agreement states: Appeal from discharge, suspension, or warning notice must be taken within ten days by written notice and a decision reached within 30 days from date of discharge, suspension or warning notice. So guess I'm wondering what I need to do at this point. I'm obviously already on radar so staying off of it really isn't a concern. I just wanna stand up do want I can fight this. I understand I made a boo-boo mistoggling a bad bag but all this for a mistake that isn't even 100% mine? Thanks.