DTS customer service can help with Defense Travel System login problems, authorizations, vouchers, CTO Submit errors, profile issues and other official travel concerns. Start with your local Defense Travel Administrator or travel help desk when possible, and use the Travel Assistance Center for problems that remain unresolved.
DTS Customer Service and Travel Assistance Center
The DTMO administrative number and address are not substitutes for the TAC, local DTA, Travel Management Company, finance office or Government Travel Charge Card support. Use the route assigned to the specific travel problem.
Best DTS Support Route by Issue
- First-time DTS account: Contact the local Defense Travel Administrator.
- CAC, certificate or login problem: Try the local help desk, TAC Live Chat or the TAC telephone number.
- Incorrect profile, organization or routing list: Contact the local DTA.
- Authorization awaiting approval: Contact the Routing Official or Authorizing Official shown in DTS.
- Authorization stuck at CTO Submit: Contact the local DTA or TAC.
- Reservation, ticket or itinerary change: Contact the Travel Management Company listed on the itinerary.
- Travel disruption after travel begins: Contact the TMC and follow the organization’s emergency-travel instructions.
- Voucher returned for correction: Review the return comments and contact the Authorizing Official or local travel office.
- Approved voucher but no payment: Review the DTS payment status, split disbursement and banking details, then contact the local finance office.
- Government Travel Charge Card: Contact the Agency Program Coordinator or Citi.
- Travel-policy question: Contact the local travel office, finance office, Authorizing Official or chain of command.
- Issue unresolved locally: Call the TAC, use Live Chat or submit a TraX help ticket.
Information to Have Before Contacting DTS Support
- Your organization and local travel office
- DTS document name or authorization reference
- Travel dates
- Document status and current routing step
- Screen number where the problem occurred
- Exact error message or code
- Whether the problem involves DTS, TraX, Passport, the TMC or Citi
- Names of the local DTA, Authorizing Official or Routing Official already contacted
- Reservation and itinerary information when relevant
- Voucher submission and approval dates
- Previous TAC ticket number
- A step-by-step description of what occurred
Provide personally identifiable or financial information only through the secure fields and procedures approved for that support channel. Do not include Social Security numbers, complete DoD ID numbers, bank details, card numbers or sensitive travel information in an ordinary ticket description or public review.
Local DTA Help Before Calling the TAC
Local DTS assistance is usually provided by a Lead Defense Travel Administrator, Organizational DTA, Finance DTA, travel clerk or another employee familiar with the organization’s DTS setup and business rules.
The local office is normally the best route for:
- Creating or updating a DTS profile
- Moving a traveler between organizations
- Correcting routing-list assignments
- Identifying the Authorizing Official
- Organization-specific travel procedures
- Accounting-label questions
- Local voucher requirements
- Returned authorizations or vouchers
- Training requirements
The TAC provides DoD-wide escalated support but may still direct a traveler back to the local organization when the issue depends on local permissions, funding, routing or policy.
DTS Login, CAC and Certificate Problems
First-time DTS users generally need a compatible browser, an approved PKI certificate or Common Access Card and a DTS profile established through their local DTA.
For login problems:
- Confirm that the CAC is inserted and recognized.
- Select the authentication certificate rather than an email-signing certificate when prompted.
- Close and reopen the browser.
- Confirm that the browser and middleware meet current requirements.
- Try the official DTS login page rather than an old bookmark.
- Contact the local DTA if the profile has not been created or transferred.
- Use TAC Live Chat or call 1-888-435-7146 if the account remains locked or unavailable.
Do not send CAC certificates, PINs, screenshots containing sensitive identity information or copies of military identification through ordinary email or public comments.
DTS Profile and Organization Problems
An outdated or incorrectly assigned profile can affect routing, accounting, reservations, payment information and the ability to create travel documents.
Contact the local DTA when:
- You transferred to a new unit or agency.
- DTS shows the wrong organization.
- Your routing officials are incorrect.
- Your government card information changed.
- Your email address or duty location is outdated.
- You cannot create an authorization or voucher.
- DTS says another organization controls your profile.
Do not create multiple DTS profiles to work around an organization or login problem unless an authorized DTA specifically directs you to do so.
DTS Authorization and Approval Problems
A DTS authorization normally documents the official itinerary, estimated expenses, reservations, funding and approvals before travel.
If an authorization is delayed:
- Open the document and review its current status.
- Check the Digital Signature and Routing section.
- Review any returned-document comments.
- Confirm that required reservations and expenses are included.
- Contact the Routing Official or Authorizing Official currently assigned to the document.
- Contact the local DTA if the routing list appears incorrect.
- Contact TAC for a technical failure that the local office cannot resolve.
TAC cannot approve official travel or replace the traveler’s Authorizing Official.
CTO Submit and Ticketing Problems
An authorization may become delayed when it does not transmit correctly to the Travel Management Company or when the TMC cannot complete a reservation.
Useful details include:
- The authorization name
- Current document status
- Travel dates
- Reservation type
- Any CTO Submit or PNR error
- Government Travel Charge Card status
- TMC contact information
TAC can assist with certain CTO Submit and DTS transmission issues, but it cannot make, change or ticket the reservation itself.
Travel Management Company Reservation Help
The Travel Management Company handles official airline, hotel and rental-car reservation servicing. Its contact information appears on the traveler’s itinerary and in DTMO’s official TMC directory.
Contact the TMC when:
- An emergency or mission requirement creates short-notice travel.
- Official travel has begun and the itinerary must change.
- A flight is cancelled or significantly disrupted.
- A reservation has not been ticketed.
- An unused paper ticket must be returned.
- The traveler requires after-hours reservation support.
Do not call the TAC expecting an analyst to book, cancel or reticket a flight.
Creating a DTS Voucher
A traveler whose TDY authorization was created in DTS generally completes the post-travel voucher in DTS. The voucher updates the estimated authorization to show what actually occurred and what was actually spent.
Before signing the voucher:
- Correct the actual departure and return dates.
- Review the itinerary and locations.
- Update lodging and transportation costs.
- Add authorized reimbursable expenses.
- Remove expenses that were not incurred.
- Attach required receipts.
- Review per diem and meal deductions.
- Confirm the payment account.
- Review split disbursement to the Government Travel Charge Card.
- Add explanations for unusual or changed expenses.
DoD travel regulations generally require a voucher created from an authorization to be completed and submitted within five working days after returning to or arriving at the permanent duty station.
DTS Receipt Requirements
A lodging receipt is required regardless of the amount. Receipts are also generally required for individual travel expenses of $75 or more.
A useful receipt should normally show:
- Merchant or provider
- Date
- Product or service
- Amount
- Proof or method of payment
A reservation confirmation, credit-card statement or estimate may not satisfy every receipt requirement. Ask the local travel office what documentation is required when a receipt is missing or incomplete.
Voucher Returned for Correction
A returned voucher is not necessarily a final denial. Open the document and read every return comment before making changes.
Common correction areas include:
- Missing or invalid receipts
- Incorrect travel dates
- Expenses entered under the wrong category
- Missing explanations
- Incorrect mileage
- Meal deductions
- Duplicate expenses
- Improper split disbursement
- Accounting or funding errors
Contact the person who returned the voucher when the comment is unclear. Resign and resubmit only after every requested correction has been addressed.
Delayed DTS Voucher or Reimbursement
When reimbursement is delayed, first check the document status inside DTS.
- Confirm that the voucher was digitally signed and submitted.
- Review whether it is waiting for a Routing Official or Authorizing Official.
- Check whether it was returned for correction.
- Confirm the approval date.
- Review the scheduled payment and split-disbursement information.
- Verify bank-account information and the Government Travel Charge Card balance.
- Contact the local finance office when the document is approved but payment has not arrived.
DTS technical support cannot approve a voucher, force an Authorizing Official to act or make a payment that belongs with the servicing finance or disbursing office.
Split Disbursement and Government Travel Card Payments
Split disbursement directs part of the approved reimbursement to the Government Travel Charge Card and the remainder to the traveler’s bank account.
Before signing a voucher:
- Review the current card balance.
- Confirm which expenses were charged to the card.
- Check the proposed split-disbursement amount.
- Confirm personal bank information through the secure profile.
- Retain the voucher and payment summary.
An incorrect split does not automatically remove the traveler’s responsibility to keep the Government Travel Charge Card current. Contact the local Agency Program Coordinator and finance office promptly.
Government Travel Charge Card Support
The local Agency Program Coordinator is the first contact for many Government Travel Charge Card concerns. Citi provides 24-hour assistance for DoD cardholders.
Use Citi or the Agency Program Coordinator for:
- Lost or stolen cards
- Declined transactions
- Card activation and PINs
- Balances and payments
- Account restrictions
- Application status
- Fraudulent card activity
The TAC can help identify a DTS problem involving card information, but it is not the bank and cannot replace a card or decide a Citi account dispute.
DTS Travel Debt Notices
A traveler may receive a debt notice when a prior payment must be collected or adjusted. Do not ignore the notice.
Review:
- The document and trip involved
- The debt amount
- The reason for the adjustment
- Any repayment deadline
- The local Debt Management Monitor
- Available waiver, appeal or repayment instructions
DTS debt payments may be available through the official Pay.gov Defense Travel System Debt Notification Payment form. Confirm the notice through DTS or the local finance office before sending money.
DTS Training and TraX Resources
DTMO provides current guides for DTS authorizations, vouchers, local vouchers, group travel, reservations and other official travel functions.
Complete the training assigned to the traveler’s role. Authorizing Officials, DTAs, travel clerks and travelers may have different required courses and system permissions.
How to Escalate a DTS Complaint
- Review the DTS document, status, return comments and current routing step.
- Contact the local DTA, Authorizing Official or travel help desk.
- Contact the TMC when the complaint involves reservations or ticketing.
- Contact the Agency Program Coordinator or Citi for travel-card problems.
- Contact the local finance office for payment, accounting or reimbursement concerns.
- Call 1-888-435-7146, use Live Chat or submit a TraX ticket for an unresolved DTS issue.
- Keep the TAC ticket number and update the existing ticket instead of opening multiple duplicate cases.
- Use the chain of command or appropriate local management route for unresolved administrative or policy concerns.
DTS Reviews and Complaints
CustomerServiceNumbers.com currently shows two visible DTS reviews with an overall rating of 3.0 out of 5. Both reviews were submitted in 2018.
One reviewer reported difficulty reaching support by telephone. Another asked about DTS selecting a different travel location or airport than expected for NAS Jacksonville.
These two older reviews are not enough to establish current DTS-wide support trends. Newer reviews can help readers understand experiences involving login, authorizations, CTO Submit, vouchers, reimbursements, TMC support, local DTAs and the Travel Assistance Center.
Privacy, Security and Fake Support Warnings
- Use official .mil websites and secure government portals.
- Verify that the connection uses HTTPS before signing in.
- Do not disclose a CAC PIN, password, authentication certificate or one-time code.
- Do not allow an unknown support caller to remotely control a government or personal device.
- Do not include PII in an ordinary TAC ticket description.
- Do not post complete DoD ID numbers, Social Security numbers, travel orders, itineraries, exact movements, bank details or Government Travel Charge Card information publicly.
- Remove names, document numbers, barcodes, signatures, locations and account data from screenshots before sharing them.
- Be cautious with unofficial websites claiming they can approve a voucher, issue reimbursement or remove travel debt for a fee.
- A review posted here does not open a TAC ticket, change a reservation, approve a voucher or contact a government office.
Official DTS and Travel Resources
Why Trust CustomerServiceNumbers.com?
CustomerServiceNumbers.com has helped readers locate support information and share service experiences since 2004. We independently organize telephone numbers, official resources, issue-specific support routes and practical escalation guidance.
We are not operated by the Defense Travel Management Office, Defense Travel System, Department of Defense, Defense Finance and Accounting Service, Citi, any military service, Travel Management Company or government contractor.
Share Your DTS Support Experience
Have you contacted a local DTA, Authorizing Official, TMC, finance office or the Travel Assistance Center about a DTS login, authorization, reservation, voucher, reimbursement or travel-card problem? Leave a factual review below and explain which official support route you used, how long the process took and whether the issue was resolved.
Comments are moderated. Do not include complete DoD ID numbers, Social Security numbers, CAC information, document names, travel orders, itineraries, exact locations, bank information, card details, passwords, home addresses, personal phone numbers, government email addresses or names of individual government employees.
Last Updated: July 11, 2026
Customer Service Information Disclaimer
CustomerServiceNumbers.com is not affiliated with the Defense Travel Management Office, Defense Travel System, Department of Defense, Defense Finance and Accounting Service, Citi, any military service, Travel Management Company or government contractor. DTS support is not provided through this website.
This page cannot create or approve an authorization, change a reservation, submit a voucher, issue reimbursement, change travel policy, resolve a Government Travel Charge Card account or remove a travel debt. Official procedures depend on the traveler’s organization, orders, authorization, funding, local rules, Joint Travel Regulations and current government guidance.
This page is not official travel, legal, financial, operational-security, cybersecurity, tax or government-employment advice. Use the local travel office and official secure systems for controlling instructions.
Comments are moderated for profanity, PII, and spam. Offensive words may be soft-masked (e.g., “f—”) but your meaning is preserved. See our Commenting Policy.
