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Log in to view information about recently implemented enhancements along with plans for current and future ACATS projects.

Learn about the new ACATS client interface enhancements that will modernize the client interfaces that firms use to communicate with the ACATS systems. These enhancements also include features to process 529 accounts transfers through the ACATS Fund/SERV® service. DTCC has updated its API Marketplace with the ACATS APIs, schemas, and API Starter Kit for the new JSON standard message formats. For full access to the DTCC API Marketplace, contact your firm’s Super Access Coordinator (SAC) to enable you as an Operator.

For SACs: If you are unable to provision entitlements to the API Marketplace, contact NSCC Integration at This email address is being protected from spambots. You need JavaScript enabled to view it.

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See Also:

Click each tab to access the ACATS input and output JavaScript Object Notation (JSON) formats, egress schema, and sample JSONs.

View the JSON input formats that are supported with the API Marketplace or Message Queue (MQ) specifications. You can also download the Ingress Schema zip file to view the input JSON schema.

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View the JSON output formats that are supported only through MQ. You can also download the Egress Schema zip file to view the output JSON schema.

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View the sample JSONs available in PDF or by downloading the zip containing the following samples:

  • Multicycle Transaction Sample JSON
  • End-of-Day Transaction Sample JSON
  • Position Sample JSON
  • Settlement Sample JSON
  • Insurance Statistics Sample JSON
  • Interface Rejects Sample JSON
  • Fund/SERV Statistics Sample JSON
  • End of Message (EOM) Notification Sample JSON

See Also: View sample requests and responses in the ACATS Message Queue (MQ) Guide. For detailed information about the JSON input structure and usage, see DTCC API Marketplace.

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View the network connectivity guide that provides the ACATS URLs in the PSE and production environments.

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ACATS Transfer Input JSON Format (Legacy TI)

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ACATS Interface Rejects MQ Output Format

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ACATS Egress Schema

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ACATS Mutual Fund Registration Input JSON Format (Legacy FR)

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ACATS Asset Input JSON Format (Legacy AT)

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ACATS Ingress Schema

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ACATS Position MQ Output Format

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ACATS Multicycle/End-of-Day MQ Output Format

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ACATS Settlement MQ Output Format

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SIFMU Industry Cheat Sheet

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ACATS Frequently Asked Questions

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Network Connectivity for ACATS Modernization

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ACATS Notes: June 12, 2024

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ACATS Message Queue (MQ) Guide

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ACATS Sample JSONs

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ACATS Sample JSONs - Zip

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ACATS Notes: April 3, 2024

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ACATS Alternative Best Practice Email/SPO Practice

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ACATS API Marketplace Demo

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ACATS API Marketplace Demo

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ACATS Fund/SERV Statistics MQ Output Format

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ACATS Insurance Statistics MQ Output Format

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ACATS Client Interface Modernization: Technology Overview

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ACATS Client Interface Modernization: Technology Overview

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