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getXMLWait() does not work in Service Portal

Aw shucks! I found out the hard way...but synchronous calls being disallowed in SP kinda makes sense

note: getXMLWait() does not work in Service Portal, use getXMLAnswer()
It seems others have noticed too
   ( https://community.servicenow.com/community?id=community_question&sys_id=c2f5c361db1cdbc01dcaf3231f96190c )

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