Action log message convention ?

[Tom Zeller]

Actions commonly validate context availability in doPreExecute(), what
log message convention do we like ?

"No <childContext>"

"No <childContext> available"

"No <childContext> available within <parentContext>"

"No <childContext> in <parentContext>"

"No <childContext> located in <parentContext>"

Other ?

The code I am referring to looks like :

doPreExecute() {
  ChildContext childCtx = parentCtx.getSubcontext(ChildContext.class);
  if (childCtx == null) {
    log.debug("{} <convention>", getLogPrefix());
    return false;
  }

I tend to prefer the shortest, "No <childContext>", but maybe that is too short.