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
After logging in, expand each section to access the ACATS modernization resources.
Expand this section to access answers to common questions, such as how to automatically reset your password.
ACATS Frequently Asked Questions
ACATS Client Interface Modernization: Technology Overview
ACATS API Marketplace Demo
Access to the DTCC API Marketplace
ACATS Message Queue (MQ) Guide
DTCC Standards for MQ Series Transmission Guide
ACATS Hybrid Transaction Reference Solution
Concept Paper: ACATS Enhancements for 529 Assets
ACATS Client Interface Modernization / 529 Plan Enhancement Initiative
ACATS 529 Plan Account Transfers Scenarios
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.
ACATS Asset Input JSON Format (Legacy AT)
ACATS Transfer Input JSON Format (Legacy TI)
ACATS Mutual Fund Registration Input JSON Format (Legacy FR)
ACATS Ingress Schema
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.
ACATS Egress Schema
ACATS Multicycle/End-of-Day MQ Output Format
ACATS Position MQ Output Format
ACATS Settlement MQ Output Format
ACATS Insurance Statistics MQ Output Format
ACATS Interface Rejects MQ Output Format
ACATS Fund/SERV Statistics MQ Output Format
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.
ACATS Sample JSONs
ACATS Sample JSONs - Zip
View the network connectivity guide that provides the ACATS URLs in the PSE and production environments.
Network Connectivity for ACATS Modernization
ACATS Client Interface Technical Inquiries
ACATS Notes: June 12, 2024
ACATS Notes: April 3, 2024
ACATS Notes: March 20, 2024
ACATS: Receiver Delete for Alternatives Testing Implementation Guidelines