MPC Class sysntax error-"BW Query Service"

Hi Experts,

Is there any limitations in Gateway for Data Model->Entity Type, wherein only a certain number of properties can be listed under one Entity Type.

We were trying out redefine "BW Query service" option in gateway for BW Query call , and one of the Entity Types(had more than 30 properties) created under this was creating syntax issue in MPC class as seen below;

However after selecting only a few, say 7-8, of those properties later, this was working fine.

Please share your thoughts on this.

Thanks
Vipin