Technical Tip: How to reduce the generated IdP prefix in order to allow for more than 16 IdPs/Domains

[amacchiaverna]

Description	This article describes how to reduce the generated IdP prefix in order to allow for more than 16 IdPs/Domains.
Scope
Solution	Steps to decrease IdP prefix to increase IdP/domain count: 1) Add SP by going to Authentication -> SAML IdP -> Service Providers and selecting 'Create New'. 2) Input all relevant information. 3) For 'IdP prefix', select the plus sign. 4) Select 'Generate prefix' and a 16 character prefix is populated. 5) Limit is 255 (alphanumeric (26 + 10)) characters.  As such, for 16 character prefix, it is possible to make 16 domains.  *Ensure all prefixes are unique* 6) Decrease this to as low as 3 to be able to get the most out of the 255 limit. 2 or lower and not so many unique combinations are get. This process is also applicable for manually creating the IdP prefix.  Simply do not do step 4.