Explanation
The Rational Adapter for HP ALM expected an absolute Uniform Resource Identifer (URI), but the value provided does not appear to be a valid URI as defined by RFC 2396: Uniform Resource Identifiers (URI): Generic Syntax, amended by RFC 2732: Format for Literal IPv6 Addresses in URLs.
User response
If you entered the value while configuring the adapter, check that the value looks correct. Make sure you've provided an absolute URI, typically starting with http:// or https://.