Am trying to convert solid body into sheet metal but facing the issue "Failed to add a rip. Please check the rip gap specified". Please help me am stuck badly.

I have a model in solid but want to convert it in sheet metal, I have specified the edges and face but facing the issue;

"Failed to add a rip. Please check the rip gap specified"

Any help to way out will be  highly appreciated. 

SolidworksDrawings And Detailing