= OpenSpecimen HowTo Specify Format of Master Patient Index ID Tags: [[OpenSpecimen]] [[HowTo]] == Procedure The settings are set using the REST API. See [[https://openspecimen.atlassian.net/wiki/display/CAT/UK+configuration;jsessionid=DAE0BD2C084248321CE32F05F0966221|OpenSpecimen REST API Documentation]]. - The format appears to be a regular expression. [[BackLinks]]