Fast Entry in Partner Profiles 
Use
Fast entry reduces the number of parameters which must be set in the partner profiles. Default values from Customizing are used for the remaining parameters.
For an explanation of the individual parameters, read the following section:
Partner Profiles in the Standard DialogPrerequisites
You must have configured the default values. They are defined in accordance with the direction and partner type. You can configure default values in the two following ways:
For the procedure, see the IMG documentation
Set default values for partner profiles Activities