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Assuming the library has registered with RBdigital for service, you can find its RBdigital numeric id by searching the RBdigital API with a non-authenticated request. Let's assume the library's name is "Somewhere County Library". You can copy Search the API by copying the following URL into your web browser to submit the search request.
http://api.rbdigital.com/v1/suggestive/libraries?q=somewhere
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