The "coverage target" participant (typeCode="COV") contains the following conformance statements:

• This participantRole SHOULD contain zero or one [0..1] addr (CONF:1198-8956).
• The content of addr SHALL be a conformant US Realm Address (AD.US.FIELDED) (2.16.840.1.113883.10.20.22.5.2) (CONF:1198-10484).

But the schematron rule is:

```
<sch:assert id="a-1198-10484-c" test="cda:participant[@typeCode='COV']/cda:participantRole/cda:addr[cda:streetAddressLine and cda:city and (cda:country!='US' or ((not(cda:country) or cda:country!='US') and cda:state and cda:postalCode))]">The content of addr *SHALL* be a conformant US Realm Address (AD.US.FIELDED) (2.16.840.1.113883.10.20.22.5.2) (CONF:1198-10484).</sch:assert>
```
...which turns the SHOULD on addr into a SHALL; the error is thrown when addr is completely absent.

The rule should be corrected to pass validation when addr is not present.