The short version: severe persistent epigastric pain radiating to the back, often with vomiting, not relieved by anything, and it is an emergency.
That pattern is quite different from the fullness, intermittent nausea and cramping of ordinary gastrointestinal effects in this class, which is why the description carries the diagnostic weight.
Concretely, gallstones and alcohol cause the majority of acute pancreatitis. Since this class is associated with gallstone formation during rapid weight loss, an indirect route exists that is distinct from a direct pancreatic effect.
Guidance against routine pancreatic enzyme monitoring in this class rests on the frequency of asymptomatic elevation and the poor specificity that follows.
Nothing here is medical advice.
Do not monitor enzymes routinely. The guidance against it is well founded.
edited 10 Dec 2024 by u100_marks — fixed an arithmetic slip in the third paragraph