STAAD RCDC Beam detailing failure.

Iam trying to design Concrete beams for STAAD File in RCDC, but it gives me a Beam Deatiling Failure, I tried to change the size of the beam and the material used for the design but no matter what size i choose, this failure  won't be solved . I have also ran an analysis in staad pro before putting it in rcdc and there were no errors
I hope someone could help me with this. Thanks!