This is our chosen approach on validation:
1. Guide the user
To make the user comfortable, first guide them in an instructive and positive manner. Here are some suggestions:
- Use a very short instruction on how to write (an id-number, amount, etc) within the text field. Or place a short sentence under the component.
- Also add a link to contextual help, or use tooltips with short descriptions.
- If there is a need to explain more in the form, then consider page help or links to other places with text