In Forms 9.2 I am not able to make a field required and read-only at the same time. Why not? We need this ability for when we perform lookups. For instance, when an employees name is selected from a database lookup on a name field, we have it fill in additional information from our HR software. Sometimes the HR software is missing key pieces of information that we use for routing decisions in Forms. So the field needs to be required. At the same time, we don't want users to be able to fill in this information themselves as we want them to contact HR so the problem can be resolved, so it also needs to be marked as read-only.
We are currently using custom jQuery to accomplish this, but I was curious why it's not allowed natively.