Of course, the information contained in the missing person's NCIC case file is considered for law enforcement only. But rather than the usual phone call to the detective in charge of your missing loved one, maybe you can do some fact checking.
Do they have dental info listed? If not, do you have the dental info that you need to get to them for inclusion into the file? This is an extremely valuable piece of information! Have here been any DNA family reference samples taken? Mitochondrial and nuclear? Can you confirm the DNA has been included in the CODIS, the national DNA database?
Dates are important as well. There is no database in existence that is immune to human error. Why not double-check the dates involved such as date last seen and date of birth?. For example, numbers such as Social Security numbers are easy to mix up. Are there any birthmarks, tattoos, or other distinguishing characteristics that weren't noted? Do you have a photo that might be of value?
A simple-fact check review can't hurt anything, and might change everything. You are not asking for investigative information. You are asking to verify the very data you helped to provide. During the course of this conversation, it is a good time to ask your law enforcement contact to register as a NamUs user.
Now is the time when you yourself can get the ball rolling by entering your own loved one into NamUs. By doing this, a great deal of conversation in regards to your loved one's case begins.
I have seen simple human errors resolved in this manner. Some are minor and do not make an immediate difference, but they still affect the future. Some errors are fairly important and can have an immediate impact on resolution or on how the case is processed internally.
Once your loved one's case is in NamUs, you can work to help make sure all the gaps are filled with accurate information. The only thing worse that a lack of data is inaccurate data. Consider the tiniest details.