When Configuring Partnership and especially with EntityID(IDPID and SPID), you can use URL as per documentation but if you are using special chars like "&" it is failing.
For example, configuring SPID with format like : https://server.domain.com/toto/url.jsp?key=561901&field=titi&type=3 is failing.
Indeed the Federation services fails to retreive the Servide Provider ID until https://server.domain.com/toto/url.jsp?key=561901
Any Siteminder AdminUI environment : 12.5 / 12.51 / 12.52 / 12.52 SP1 when configuring entitied for partnerships
Any SecureCloud environment : 1.5x
You can not use the "&" in the SPID as it is a special char part of a query string like "?"
Because the ampersand character in the EntityID query string will be recognized as a separate query parameter.
The below Reference URL is more appropriate, which states
• An entity ID: 1) MUST be a URI, 2) SHOULD be an absolute URL, and 3) SHOULD NOT be a URN
• The entity ID MUST be globally unique to avoid name collisions both within the Federation and across federations
• If the entity ID is a URL (which is strongly RECOMMENDED), then:
o the host part of the URL MUST be a name rooted in the organization's Primary DNS Domain
o the URL MUST NOT contain a port number, a query string, or a fragment identifier
Recommended EntityID would be :
Invalid EntityID would be :