kotindia-core/io.github.kotindia/UAN/validate

validate

fun validate(value: String): ValidationResult(source)

Validates an EPFO Universal Account Number (UAN).

Input normalisation applied before validation (in order):

Trim leading/trailing whitespace
Strip all internal whitespace

After normalisation, checks are applied in order — first failing check wins:

InvalidReason.EMPTY if the result is blank
InvalidReason.WRONG_LENGTH if length is not 12
InvalidReason.INVALID_FORMAT if any character is not a digit (0–9)

No checksum: EPFO has not published a public checksum algorithm for UAN. No prefix rule: EPFO has not published a first-digit constraint for UAN. All 12-digit, all-digit values are accepted.

Return

ValidationResult.Valid if the UAN passes format validation, ValidationResult.Invalid with an appropriate InvalidReason otherwise.

Parameters

value

Raw UAN string in any common input form.

Samples

check(UAN.validate("100123456789") == ValidationResult.Valid)