Service Instance Name is too retractive.

I have a requirement for service-instance-names to support the plus character ('+').   The issues is that SO rejects any requests that has a service-instance-name that contains the Plus ('+') character.   

The current workaround is to encode the occurrences of '+' in the name with double underscore ( "__" ) before submitting to SO.  

 The issue with this workaround is that it is difficult for downstream systems to decode the name into its intended format.  

The services being created is not virtual.  It is a service being created on a PNF.  

Ask:
Reduce the restriction on the service instance name so that it allows the '+' character.