My organization has a custom secure domain configured for our site. When attempting to import Yahoo contacts into an address book in the Participant Center, we produce Error: An unexpected error occurred while trying to retrieve contacts from the selected source. Try again later. How can I successfully import contacts from Yahoo?
If you have purchased a secure primary domain, you must request oAuth keys from Yahoo in order to be granted read access to Yahoo contacts. Because the new domain is owned by your organization, the responsibility to request these keys from Yahoo are internal to your organization.
You will need to create a Yahoo Developer account and create a custom application with some information about the permissions you want to request. In this case, you simply will require read access to Yahoo contacts.Once you complete the process, Yahoo will supply you with an API consumer key and a consumer secret key which will need to be input into the following SDPs under Set Up > Site Options from within Luminate Online.
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If this does not resolve your issue then please review this article for an issue reported in August 2018.