rftdat (OpenURL 1.0) and pid (OpenURL 0.1), respectively, is one of if not the most powerful OpenURL field(s) and SFX allowed the customer to make full use of this power. It's such a shame for the Alma link resolver not even being able to parse a local identifier from rftdat / pid in cases when these parameters contain anything else than just the identifier (like in rftdat=<GVI>BV012345678</GVI>). So please allow regular expressions to define a pattern for a substring to extract from the value passed in rftdat / pid.