Currently in ICU 63, there is an exhaustive test failure because in the "sd" locale, one of the month names (for July) uses a character not in the exemplar set. This could be an issue with the name, or with the exemplars.
CLDR tests currently consider this a warning, while ICU tests consider it an error. There are two issues:
Fix the "sd" month name and/or eemplar set
Ensure alignment of CLDR tests with ICU tests for CLDR data in areas such as this and elsewhere; see cldrbug 11486: