First important decision in validations
Single validation vs Collection of validations
This choice is not UI fluff. It fundamentally changes how your rule behaves, how errors are reported, and how users should think.
If you don’t explain this upfront, everything after becomes noise.
1. What this choice actually means (plain truth)
✅ Single validation
You are answering one question.
“Does this element comply with rule X?”
Characteristics:
- One condition
- One validator
- One error message
- Pass / fail per element
This is 70% of all good rules.
Typical use cases:
- Required parameter exists
- Value is in a lookup list
- Value matches regex
- Boolean is Yes/No
- Numeric value within range
If you are unsure start here.