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It was necessary to update SourceSystem Key value on localhost, dev and acceptance. I expect it will also have to be done on Acceptance. Please refer to the following tasks:
Localhost: 198139: webconfig - update the SourceSystemKey entry on local host
Development: 198142: webconfig - verify / update the SourceSystemKey entry on development - and update DateAppLastModified date
Acceptance: 198144 webconfig - verify / update the SourceSystemKey entry on acceptance - and update DateAppLastModified date
Production: 196345 198145 webconfig - verify / update the SourceSystemKey entry on prod - and update DateAppLastModified date
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