error message function " generic branch"

[pfp89]

when I try to create a generic ramp on a normal mtd at the time of inserting the slope (I would like to put a normal 30%) gives me a strange mistake: "Superficie ramp or relationship ramp not allowed". Can anyone tell me why this error message appears to me?? What am I wrong? ?
Thank you.
:finger:

 

[cad_parolisi]

when you define the ramp, in reality you define the site of the ground that is smoothed (or horizontally or inclined, no matter). when the software asks for the angle or slope to shape the ground before closing the function, it essentially asks to insert a congruous value that allows, according to the quotas defined for the ramp, to connect with the surrounding soil. if the slope inserted has a value for which the soil fails at some point to connect with the surrounding land (because the quotas that are generated are for example higher than the surrounding land and therefore there is never a point of contact within the model) the warning message appears.

to understand if this is the problem, just enter a very high connection value, type 70 or 80 degrees. It is probable that in this case the function is carried correctly to term. I also remember that the ramp, or better to say, the connection between the ramp and the surrounding terrain, can also happen for different slopes/angles along the perimeter of the ramp itself, so as to differentiate, according to the surrounding terrain, the different fitting and then make in order to avoid the problem described above.