Issue arises when you are using the assembly and disassembly function, the error reads as a “Mandatory Dimensions” issue when no dimensions are being used.
Issue is a bug on the v12 patch 27 at the moment and needs to be, either updated to a newer patch level or copy the below TRT files from the TRT folder of a newer environment.
The files that need to be copied into the TRT folder are
Please ensure that you perform this in the TEST folder and TEST thoroughly before implementing in the LIVE environment.
The bug has been repaired in patch 28 and upward.