AD0196: Required AVALU value is null, ADNCA

Hello,

I get the following Error for the variable AVALU in ADNCA dataset: “AD0196: Required AVALU value is null”.

The reason AVALU is null is because AVAL is missing.

From the ADaMIG for Non-compartmental Analysis Input Data V1.0, I understand that records with a missing AVAL can be included in the ADNCA dataset, is that correct?

If so, then should AVALU always be populated, even when AVAL is null?

Thank you,

Dana