CBP has updated the ACAS Implementation Guide which can be found at:
https://www.cbp.gov/document/guides/air-cargo-advance-screening-acas-implementation-guide
The Updated Frequently Asked Questions for ACAS can be found at:
https://www.cbp.gov/document/faqs/enhanced-air-cargo-advance-screening-frequently-asked-questions
For questions about implementation of these changes, please contact ntcacasonboarding@cbp.dhs.gov. For technical questions, please contact your assigned Client Representative.