Corporate Action Data Dictionaries This collection of documents provides detailed mappings of event types to function / activity codes. Data Dictionaries Meetings – SR 2021 Corporate Action Meetings Data Dictionary SR 2021 (316 KB, .xlsx) (Updated May 11, 2021) – This document outlines mapping for tags associated with ISO 20022 published data fields for Meetings messages. Announcements, Entitlements & Allocations, and Instructions – SR 2023 Corporate Action Announcements Data Dictionary SR 2023 (525 KB, .xlsx) (Updated August 16, 2023) – These documents list the ISO 20022 event types, as well as the ISO 20022 published data fields and mapping back to DTC function codes. Corporate Action Entitlements and Allocations Data Dictionary SR 2023 (451 KB, .xlsx) (Updated July 31, 2023) – These documents list the ISO 20022 event types, as well as the ISO 20022 published data fields and mapping back to DTC function codes. Corporate Action Elections Data Dictionary SR 2023 (407 KB, .xlsx) (Updated August 16, 2023) – These documents outline mapping for tags associated with ISO 20022 messages for Distributions Instructions to data elements associated with DTC’s EDS legacy process, as well as Reorganization Instructions mapping.