Why is my LSID being marked as invalid and not accepted?

The LSID specification defines the first three portions as case-insensitive, that is "URN:LSID:(Authority)". The remaining portion is case-sensitive. In OME-XML however we assume lower case for the first two portions "urn:lsid:", for "(Authority)", normally a domain name, any case is acceptable but lower case is recommended for consistency. The remaining portion is case-sensitive.

For full information on our use of LSID in OME-XML see: IDs and LSIDs in OME-XML