Solved
validateAfter: "SUBMIT" is not working
Appian is evaluating validation before I submit, even though the parameter is set.
a!validationMessage(
message: "Field is Required",
validateAfter: "SUBMIT",
showWhen: a!isNullOrEmpty(
rule!_process_CurrencySanitizer(a!defaultValue(ri!value, null))
)
)

Why is Appian behaving like that? It should be expecting my submit.
