What common mistake do developers make with Post routes, why does the mistake cause problems, and what is the safer approach?

What common mistake do developers make with Post routes, why does the mistake cause problems, and what is the safer approach? One recurring problem with POST routes is applying it without understanding the boundary it protects. Using a state-changing HTTP action as a GET route merely because it is convenient for linking. In addition, POST routes are commonly used to create resources or submit state-changing form data. Safer engineering approach: keep the responsibility in the correct layer, use the framework's supported API, validate and authorize inputs, avoid hidden side effects, and verify the behavior with tests.