I think the "Not in Transmittal Set" text does not come from the Revision History library part. On your screenshot, I think the Revision History object starts above the "PROJEKT NR." field.
If you go to the Master Layout of this Layout you are showing, select the Text. I suspect that it is an Autotext or a static Text.
Laszlo Nagy, Moderator, Site Admin
Get Archicad Tips at https://twitter.com/laszlonagy
AMD Ryzen 1700X CPU, 48 GB RAM
NVidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), WIN10 PRO ENG
AC20-AC24 Loving Archicad since 1995