Record types shine for genuinely different processes on one object — and multiply your maintenance everywhere else.
The right reason
Different sales processes, different page layouts, different picklist values for the same object: that is what record types are for. One object, several shapes.
The three warning signs
If record types differ only by one field, if users constantly pick the wrong one, or if you have more than five on an object — you probably wanted a field, a flow, or a separate object.
Practice in your org
- Open your Developer Edition org and follow along step by step
- Change one thing at a time and note what happens
- When something breaks, read the error before searching for it