I have set up Salesforce as IDp as well as SP. I am able to login to Service Provider org by navigating to URL of IDp "https://MyDomain.salesforce.com/idp/login?app=0sp40000000T3fU" from Browser.
However, When I try to attempt same from Salesforce1, I am geeting error like
The value of the "app" parameter contains a character that is not allowed or the value exceeds the maximum allowed length.
I already searched everything and found that it has something to do with "RelayState", Not sure how to configure it.
Please suggest some pointers.