Permit Amendment and Cancellation
Learn when you can amend, extend or cancel a transhipment permit in TradeNet, which fields are non-amendable, how payment timelines affect validity extension, and when voluntary disclosure to Singapore Customs is required.
Last updated 25 February 2026
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Amending a Permit
You may amend an approved permit in TradeNet as long as it is still valid.
There is no limit to the number of amendments you can make.
However, not all fields can be amended. Refer here for the list of non-amendable fields.
After Making Amendments
If your permit conditions require Customs clearance, you must present the most updated approved copy of the permit to checkpoint officers during cargo clearance.
Refer to a sample of an amended Cargo Clearance Permit.
When a Permit Cannot be Amended
You cannot amend a permit if:
It has already been used for cargo clearance.
It has expired.
The field you want to change is non-amendable.
Cancelling a Permit
If you submitted incorrect details that cannot be amended, you must:
Cancel the existing permit (while it is still valid), and
Apply for a new permit.
Cancelled export permits cannot be used for cargo movement.
You may also need to cancel certain permits (e.g. Out-Approved Premises/Schemes permits) or extend their validity if they are not used. Check the specific requirements in your permit conditions.
You cannot cancel a permit if:
It has already been used for cargo clearance.
It has expired for more than 1 calendar day.
It has been requested for audit by the Manifest Compliance Unit of Singapore Customs.
In these cases, you must submit a voluntary disclosure to Singapore Customs.