Hi Karyn,
If you are using one of the ELR_7 Test Cases in the Context-Based Validation function of the NIST ELR HL7 v2.5.1 Validation Tool – ONC 2014 and 2015 Edition at https://hl7v2-elr-testing.nist.gov/mu-elr/ …
…then the DOB (PID-7.1) for these test messages is Test Case Fixed Data and must be either 20081101, 19161016, or 19480802 according to the Message Content sheet for each of the ELR_7 Test Cases
The definition for Test Case Fixed Data is provided on page 7 of a file accessed via the link on the Documentation page for “2015 Edition Understanding ELR ONC Certification Testing”. The information found on page 7 is shown here:
Thank you for your question.