1. A computer-implemented method for validating one entity for another entity, comprising: classifying an entity type of an entity to be validated based on one or more predefined entity classifiers; selecting one or more validation rules based on the classification of the entity; producing, by a computer of a requesting entity, a validation request including an identification of the entity to be validated and the selected one or more validation rules; providing, by the computer, the validation request to one or more validation entities that perform at least a portion of the validation in accordance with the validation rules; providing to the computer of the requesting entity a validation outcome of the validation; and generating a validation request management display including an inbox icon, an outbox icon, an overview section, and a details section, wherein: responsive to selection of the inbox icon, the overview section displays a list of validation outcomes that have been received and the details section displays detailed information regarding a selected one of the listed validation outcomes; and responsive to selection of the outbox icon, the overview section displays a list of validation requests that have been provided to validation entities and the details section displays detailed information regarding a selected one of the listed validation requests.