Getting Error in Portal Object!!!

This error doesn't make anything clear. But you can do these things

1. Try to check the log files. 
2. Try creating another portal object and using the same interface
3. If none of these work, you can raise a support ticket with Appian (if this is not a community environment) 

This error doesn't make anything clear. But you can do these things

1. Try to check the log files. 
2. Try creating another portal object and using the same interface
3. If none of these work, you can raise a support ticket with Appian (if this is not a community environment) 

ok will check Harshit, thanks for the quick response!!