In older versions of OpenSpecimen, there was value as 'Not Specified' specimen type under every class i.e., Fluid, Cell Molecular, and Tissue. Post v5.x of OpenSpecimen, these values are not valid as duplicate dropdown values give issues. The system throws an error if the 'Not Specified' value is selected as container restrictions. If the user has already used these specimen types for existing specimen types, this document explains how to fix that.
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