German term (edited): dem Bedarfsfall vorbehalten

I'm not a lawyer, so there might well be a better solution. A court stipulation may be invoked as the need arises. I don't think you need to translate vorbehalten - reserved if you use "as the need arises."

Eine gerichtliche Regelung bleibt dem Bedarfall vorbehalten.

... stipulation is approved as fair, reasonable, and adequate. The parties are directed to consummate the stipulation. They may agree to extensions of time to carry out the stipulation as the need arises.

securities.stanford.edu/1011/SRV99/2004115_r01x_9900280.pdf

stipulation may be invoked as the need arises

1. JSTOR: "Autonomic Judicial Review": Powers in Search of Identity ...
"The court cannot be asked to overrule itself in the same case; ... which inherent powers may be invoked or applied from time to time as the need arises. ...
links.jstor.org/sici?sici=0021-8553(1999)43%3A1%3C99%3A%22JRPIS%3E2.0.CO%3B2-U

There are two alternatives under which an appellate court may invoke the plain error rule and consider an error not properly preserved for appeal.

http://www.dcba.org/brief/janissue/1999/art50199.htm