# Update a purchase order

Update an existing purchase order.

Editing limitations:
- In the draft status, all fields can be edited.
- Once a purchase order moves to any other status (open, receiving, received, cancelled, or closed),
updating via PUT is no longer allowed.
- For purchase orders in open status, use the POST /v2/purchase_orders/{purchase_order_id}/shipping_details endpoint to update shipping-related details.

Endpoint: PUT /v2/purchase_orders/{purchase_order_id}
Version: 2.0.0
Security: api_keys

## Path parameters:

  - `purchase_order_id` (string, required)
    The purchase order identifier
    Example: "se-234"

## Request fields (application/json):

  - `supplier_id` (string, required)
    Example: "67890"

  - `order_date` (string)
    Example: "2025-01-15T00:00:00Z"

  - `expected_delivery_date` (string)
    Example: "2025-02-01T00:00:00Z"

  - `payment_terms` (string)
    Enum: "none", "cash_on_delivery", "payment_on_receipt", "payment_in_advance", "net_7", "net_15", "net_30", "net_45", "net_60"

  - `payment_status` (string)
    Enum: "none", "unpaid", "partially_paid", "paid", "refunded", "credit_issued", "other"

  - `currency_code` (string)
    Example: "USD"

  - `shipping_carrier` (string)
    Example: "UPS"

  - `tracking_number` (string)
    Example: "1Z12345E1234567890"

  - `reference_number` (string)
    Example: "REF-12345"

  - `warehouse_id` (string, required)
    Example: "se-123456"

  - `note_to_supplier` (string)
    Example: "Please expedite delivery"

  - `products` (array, required)

  - `products.sku` (string, required)
    Example: "WIDGET-001"

  - `products.supplier_sku` (string)
    Example: "SUPP-WIDGET-001"

  - `products.quantity` (integer, required)
    Example: 100

  - `products.cost` (number)
    Example: 9.99

## Response 200 fields (application/json):

  - `purchase_order_id` (string)
    Example: "se-234"

  - `order_number` (string)
    Example: "02162026-02"

  - `supplier_id` (string)
    Example: "se-567"

  - `status` (string)
    Enum: "draft", "open", "receiving", "received", "cancelled", "closed"

  - `order_date` (string)
    Example: "2025-01-15T00:00:00Z"

  - `expected_delivery_date` (string)
    Example: "2025-02-01T00:00:00Z"

  - `create_date` (string)
    Example: "2025-01-14T10:30:00Z"

  - `modify_date` (string)
    Example: "2025-01-14T10:30:00Z"

  - `payment_terms` (string)
    Enum: "none", "cash_on_delivery", "payment_on_receipt", "payment_in_advance", "net_7", "net_15", "net_30", "net_45", "net_60"

  - `payment_status` (string)
    Enum: "none", "unpaid", "partially_paid", "paid", "refunded", "credit_issued", "other"

  - `currency_code` (string)
    Example: "USD"

  - `shipping_carrier` (string)
    Example: "UPS"

  - `tracking_number` (string)
    Example: "1Z12345E1234567890"

  - `reference_number` (string)
    Example: "REF-12345"

  - `warehouse_id` (string)
    Example: "se-123456"

  - `note_to_supplier` (string)
    Example: "Please expedite delivery"

  - `products` (array)

  - `products.sku` (string)
    Example: "WIDGET-001"

  - `products.supplier_sku` (string)
    Example: "SUPP-WIDGET-001"

  - `products.quantity` (integer)
    Example: 100

  - `products.cost` (number)
    Example: 9.99

## Response 400 fields (application/json):

  - `request_id` (string, required)
    A UUID that uniquely identifies the request id.
This can be given to the support team to help debug non-trivial issues that may occur
    Example: "aa3d8e8e-462b-4476-9618-72db7f7b7009"

  - `errors` (array, required)
    The errors associated with the failed API call

  - `errors.error_source` (string, required)
    The source of the error, as indicated by the name this informs us if the API call failed because of the
carrier, the order source, or the ShipStation API itself.
    Enum: "carrier", "order_source", "ShipStation"

  - `errors.error_type` (string, required)
    The type of error
    Enum: "account_status", "business_rules", "validation", "security", "system", "integrations"

  - `errors.error_code` (string, required)
    The error code specified for the failed API Call
    Enum: "auto_fund_not_supported", "batch_cannot_be_modified", "carrier_conflict", "carrier_disconnected", "carrier_not_connected", "carrier_not_supported", "confirmation_not_supported", "default_warehouse_cannot_be_deleted", "field_conflict", "field_value_required", "forbidden", "identifier_conflict", "identifiers_must_match", "insufficient_funds", "invalid_address", "invalid_billing_plan", "invalid_field_value", "invalid_identifier", "invalid_status", "invalid_string_length", "label_images_not_supported", "meter_failure", "order_source_not_active", "rate_limit_exceeded", "refresh_not_supported", "request_body_required", "return_label_not_supported", "settings_not_supported", "subscription_inactive", "terms_not_accepted", "tracking_not_supported", "trial_expired", "unauthorized", "unknown", "unspecified", "verification_failure", "warehouse_conflict", "webhook_event_type_conflict", "customs_items_required", "incompatible_paired_labels", "invalid_charge_event", "invalid_object", "no_rates_returned"

  - `errors.message` (string, required)
    An error message associated with the failed API call
    Example: "Body of request cannot be null."

  - `errors.field_name` (string)
    The name of the field that caused the error (only present for validation errors)
    Example: "inventory_warehouse_id"

  - `errors.field_value` (string)
    The invalid value that was provided for the field (only present for validation errors)
    Example: "invalid-id"

## Response 404 fields (application/json):

  - `request_id` (string, required)
    A UUID that uniquely identifies the request id.
This can be given to the support team to help debug non-trivial issues that may occur
    Example: "aa3d8e8e-462b-4476-9618-72db7f7b7009"

  - `errors` (array, required)
    The errors associated with the failed API call

  - `errors.error_source` (string, required)
    The source of the error, as indicated by the name this informs us if the API call failed because of the
carrier, the order source, or the ShipStation API itself.
    Enum: "carrier", "order_source", "ShipStation"

  - `errors.error_type` (string, required)
    The type of error
    Enum: "account_status", "business_rules", "validation", "security", "system", "integrations"

  - `errors.error_code` (string, required)
    The error code specified for the failed API Call
    Enum: "auto_fund_not_supported", "batch_cannot_be_modified", "carrier_conflict", "carrier_disconnected", "carrier_not_connected", "carrier_not_supported", "confirmation_not_supported", "default_warehouse_cannot_be_deleted", "field_conflict", "field_value_required", "forbidden", "identifier_conflict", "identifiers_must_match", "insufficient_funds", "invalid_address", "invalid_billing_plan", "invalid_field_value", "invalid_identifier", "invalid_status", "invalid_string_length", "label_images_not_supported", "meter_failure", "order_source_not_active", "rate_limit_exceeded", "refresh_not_supported", "request_body_required", "return_label_not_supported", "settings_not_supported", "subscription_inactive", "terms_not_accepted", "tracking_not_supported", "trial_expired", "unauthorized", "unknown", "unspecified", "verification_failure", "warehouse_conflict", "webhook_event_type_conflict", "customs_items_required", "incompatible_paired_labels", "invalid_charge_event", "invalid_object", "no_rates_returned"

  - `errors.message` (string, required)
    An error message associated with the failed API call
    Example: "Body of request cannot be null."

  - `errors.field_name` (string)
    The name of the field that caused the error (only present for validation errors)
    Example: "inventory_warehouse_id"

  - `errors.field_value` (string)
    The invalid value that was provided for the field (only present for validation errors)
    Example: "invalid-id"