shipments

Update internal notes for a shipment

Changed on Oct 22, 2026

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Update the internal notes on a shipment. You can either overwrite the existing notes entirely or append new text to the current notes.

Mode	note value	Result
overwrite	"new note"	Replaces existing notes
overwrite	"" or " "	Clears the note
append	"new note"	Appends text to existing notes

post/v2/shipments/{shipment_id}/internal_notes

Request

Base URL
https://api.shipstation.com
URL
https://api.shipstation.com/v2/shipments/{shipment_id}/internal_notes
Auth
API key in header api-key

Request body

notestring required

The note text to set or append.

mode'append' | 'overwrite' required

Controls how the note is applied.

append adds the text to the end of any existing notes.
overwrite replaces the existing notes entirely (use an empty string to clear).

Example request

{
  "note": "Customer called — prefers delivery after 5 PM",
  "mode": "append"
}

Response

The internal notes were updated successfully.

internal_notesstring

The resulting internal notes after the update.

Example response

{
  "internal_notes": "Original note\nCustomer called — prefers delivery after 5 PM"
}

Changes

Oct 22, 20264e29670aa28d Revision changes
- warning
  added the new bring_your_own_label_not_supported enum value to the // response property for the response status
- warning
  added the new bring_your_own_label_not_supported enum value to the // response property for the response status
- warning
  added the new multiple_sales_orders enum value to the // response property for the response status
- warning
  added the new multiple_sales_orders enum value to the // response property for the response status
- warning
  added the new sales_order_link_required enum value to the // response property for the response status
- warning
  added the new sales_order_link_required enum value to the // response property for the response status
Oct 9, 2026934f5935dbea Revision changes
- breaking
  the / response's property type changed from no type to object for status
- breaking
  the / response's property type changed from no type to object for status
- info
  added the optional property // to the response with the status
- info
  added the optional property // to the response with the status
- info
  added the optional property // to the response with the status
- info
  added the optional property // to the response with the status
- info
  removed from the / response property allOf list for the response status
- info
  removed from the / response property allOf list for the response status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status
- info
  added the required property // to the response with the status

Operation history (4 revisions)