Views are not multi-source aware - only source tables

Views are not multi-source aware - only source tables. You have to explicitly have a source_name column on the view that maps to the respective source name columns in Dynamic VDB.

I'm not using Designer just a very basic dynamic VDB[1], if I "select
id, SOURCE_NAME from emp" I get results, this is the physical table. If
I query the empview, select id, SOURCE_NAME from empview I get the teiid
processor error "TEIID30020 Processing exception for request
MwpyLkSYMked.14 'TEIID31118 Element "SOURCE_NAME" is not defined by any
relevant group.' unless I add the SOURCE_NAME column to the view, so it
doesn't even make it to a source query.

[1]

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<vdb name="multi_basic" version="1">
<description/>
<property name="validationDateTime" value="Mon Oct 31 08:01:36 CDT 2016"/>
<property name="validationVersion" value="8.12.6"/>
<model name="multi_phy" type="PHYSICAL" visible="true">
<property name="multisource" value="true"/>
<source connection-jndi-name="java:/deb" name="deb"
translator-name="postgresql"/>
<source connection-jndi-name="java:/dv63" name="dv63"
translator-name="postgresql"/>
<metadata type="DDL"><![CDATA[
CREATE FOREIGN TABLE emp (
id integer NOT NULL OPTIONS(NAMEINSOURCE '"id"', NATIVE_TYPE
'int4', CASE_SENSITIVE 'FALSE', FIXED_LENGTH 'TRUE', SEARCHABLE
'ALL_EXCEPT_LIKE'),
name string(2147483647) OPTIONS(NAMEINSOURCE '"name"', NATIVE_TYPE
'text'),
SOURCE_NAME string(50),
CONSTRAINT pk_emp PRIMARY KEY(id)
) OPTIONS(UPDATABLE 'true',NAMEINSOURCE '"public"."emp"')
]]></metadata>
</model>

<model name="multiv" type="VIRTUAL" visible="true">
<property name="imports" value="multi"/>
<metadata type="DDL"><![CDATA[
CREATE VIEW empview (
id integer,
name string(100)
)
AS
SELECT id,name FROM multi_phy.emp
]]></metadata>
</model>
</vdb>