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Log in to view the NSCC file formats for ACATS that consist of fixed and variable input and output formats.
Note: DTCC is modernizing the client interfaces that firms use to communicate with the ACATS systems. The client interface enhancements also include features to process 529 accounts transfers through the ACATS Fund/SERV® service. To access resources for these client interface enhancements, see the ACATS Projects section.
View the JSON input formats that are supported with the API Marketplace or Message Queue (MQ) specifications.
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View the JSON output formats that are supported only through MQ.
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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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Click to view the network connectivity guide that provides the ACATS URLs in the PSE and production environments.
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Click to access and download the legacy fixed and variable input formats for ACATS.
Fixed Input
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Variable Input
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Click to access and download the legacy fixed and variable output formats for ACATS.
Note: DTCC is providing a temporary hybrid solution to firms that need to submit transactions through JSON messages but continue to receive multicycle egress through the legacy fixed or variable formats. For more information, see the ACATS Hybrid Transaction Reference Solution resource in the ACATS Client Interface Modernization section.
Fixed Output
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Variable Output
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