"Reasonable justification" refers to having a logical and understandable reason or explanation for doing something or making a particular decision. It means there is a valid basis or evidence to support the action or belief. Full definition
We can even accompany our offers with reasonable justification for why it is the best deal for the seller and their agent. (biggerpockets.com)
Certainly, I tend to project my own preferences back on to him, but I hope I do not do so without reasonable justification. (religion-online.org)
On application to the court and on the showing of reasonable justification by the individual, another supreme court certified defensive driving school. (azcourts.gov)