Digestive enzymes are produced within the pancreatic acinar cells, packaged into storage vesicles called zymogens, and then released via the pancreatic ductal cells into the pancreatic duct. They are then secreted into the small intestine to begin the metabolic process(http://emedicine.medscape.com/article/181364-overview). If it does get to the end side duct, mucosa pancreojejunal anastomosis has high rate of leakage since the outer layer is simply attached to intestinal wall and doesn’t drain to the intestinal lumen. So this is a serious factor that must be take into consideration, as only the end to end pancreatojejunal anastomosis is the safest if the pancreas is soft or hard.