CBP deploys ACE validation of ITN for EEI submissions to DIS, production on October 8, 2026
CSMS # 69827440 - Document Image System (DIS) Validation of Internal Transaction Number (ITN) for Electronic Export Information (EEI) Submissions (CBP-255) Deployed to ACE in the Certification Environment and Updated DIS Implementation Guide is Now Available
CBP states in CSMS # 69827440 that the Document Image System (DIS) validation of the Internal Transaction Number (ITN) for Electronic Export Information (EEI) submissions (CBP-255) has been deployed to the ACE Certification Environment and will be deployed in the ACE Production environment on October 8, 2026. ACE will validate the ITN when it is provided via EDI or submitted by email to DIS, accepting only valid and properly formatted ITNs; an invalid ITN returns the message "Submitted ITN is invalid or the format is invalid" and the DIS submission is rejected.
Filers submitting EEI to DIS must ensure the ITN matches exactly the format provided on the corresponding AES export transaction, or the DIS submission will be rejected when production validation begins on October 8, 2026.
Source: CBP · CSMS · content.govdelivery.com