Obtain your Company ID (CID) and Action Tracker ID (TYPE) from your CJ Client Integration Engineer before starting. These are static values that can be hard-coded.
Parameter order doesn't matter — you can arrange query string parameters in any order.
Replace all placeholder values with your actual data. Brackets are for illustration only and should not appear in your final code.

S2S Postback Structure

Server-to-Server

https://www.emjcd.com/u?CID={{cid}}&TYPE={{type}}&METHOD=S2S&CJEVENT=[cje_cookie_value]&eventTime=[ISO8601_timestamp]&OID=[order_id]&CURRENCY=USD&COUPON=[coupon_code]&ITEM1=[sku_1]&AMT1=[unit_price_1]&QTY1=[quantity_1]&DCNT1=[item_discount_1]&DISCOUNT=[order_discount]&CUST_STATUS=[New|Return|Lapsed]

S2S Parameters

Click any row to see type, format, and value examples.

Parameter

Description

Required

CID

Your CJ Enterprise ID. This value is static and can be hard-coded for all calls from your program.

Required

TYPE

The CJ Action Tracker ID identifying the specific commissionable action being tracked.

Required

Type: Integer

Examples

TYPE=123456

Note: Your program may have multiple actions (e.g., a sale and a lead), each with a different TYPE value. Pass the TYPE corresponding to the action being tracked in each call.

METHOD

Identifies the tracking method. Must always be set to S2S for server-to-server postback calls.

Required

CJEVENT

The unique CJ click ID captured from the affiliate landing page URL and stored in the cje cookie. Required for publisher attribution.

Required

Type: StringFormat: Alphanumeric, up to 64 characters

Examples

CJEVENT=b7f2a9d4c1e836b0f92d4a1c5e7b8a39

Note: Read from the cje server-side cookie at the time of conversion. Must always reflect the most recent click value — when a new affiliate link is clicked, the cookie value must be overwritten. If CJEVENT is not available at conversion time, the transaction will not be attributed to a publisher.

EVENTTIME

The date and time the conversion occurred. Allows you to specify an event timestamp rather than relying on CJ's receipt time.

Required

Type: StringFormat: ISO 8601 — must be URL encoded

Examples

eventTime=2026-08-12T09:45:30Z

eventTime=2026-05-22T14:10:15-07:00

Note: If omitted, CJ uses the time the call is received. If the value is malformed, the transaction errors. If sent as empty, CJ uses receipt time. Timestamps more than 24 hours in the future will cause a transaction error.

OID

Your unique Order ID or confirmation identifier for the transaction. Used to cross-reference your system with CJ's records.

Required

Type: StringFormat: Alphanumeric, dashes, and underscores only. Max 96 characters.

Examples

OID=145683

OID=ORD-2024-001234

Note: Do not include special characters, spaces, or PII such as email addresses. Values are truncated after 96 characters.

CURRENCY

ISO 4217 three-letter currency code for the transaction. Applies to all AMTx values in the call.

Required

Type: StringFormat: ISO 4217 three-letter code

Examples

CURRENCY=USD

CURRENCY=GBP

Note: Do not pass a blank value — CURRENCY= with no value will cause a transaction error. If omitted, CJ records the amount in your program's functional currency. If a currency other than your functional currency is passed, CJ converts the amount using the current exchange rate.

COUPON

The coupon or promo code applied to the order. Enables coupon-level reporting and lets you control which coupons are commissionable.

Recommended

Type: StringFormat: Letters, numbers, dashes, and underscores only. Multiple codes separated by commas.

Examples

COUPON=SAVE20

COUPON=SPRING25,LOYALTY10

Note: Omit this parameter if no coupon was applied.

DISCOUNT

Whole order discount amount applied to the transaction.

Recommended

Type: Decimal

Examples

DISCOUNT=12.99

DISCOUNT=0

Note: If no discount applies, use DISCOUNT=0 or omit the parameter. Do not pass DISCOUNT= with an empty value — this will cause a transaction error. For item-level discounts, use DCNTx instead.

Item-Level Parameters

Item-level parameters use an indexed naming pattern — ITEM1, AMT1, QTY1 for the first item, ITEM2, AMT2, QTY2 for the second, and so on. The sequence must be unbroken (no gaps in the numbering). A maximum of 100 item sets is supported per order.

Click any row to see type, format, and value examples.

Parameter

Description

Required

ITEMx

The SKU or product identifier for the line item. Must have a corresponding AMTx and QTYx with the same index number.

Required

Type: StringFormat: Alphanumeric, dashes, and underscores only. Max 100 characters. No spaces or special characters.

Examples

ITEM1=sku-3214

ITEM2=productB_v2

Note: SKU values must match the format and values in your CJ product catalog exactly for item-based commissions to function correctly. Do not include 'x' literally — replace it with the item index number (1, 2, 3...).

AMTx

The pre-tax, pre-shipping unit price for the corresponding ITEMx. CJ multiplies this value by QTYx to calculate the total for that line item.

Required

Type: DecimalFormat: Numbers and decimal point only. No dollar signs, commas, or negative values.

Examples

AMT1=13.49

AMT2=29.99

Note: Pass the unit price of a single item — not the line total. CJ handles the multiplication. If a discount is applied and you are not using the DISCOUNT parameter, pass the post-discount unit price here. If a particular action always has a zero unit price, you may hard-code AMTx=0.

QTYx

The quantity purchased for the corresponding ITEMx. Must be a positive whole number.

Required

Type: IntegerFormat: Positive integers ≥ 1 only. No decimals or commas.

Examples

QTY1=3

QTY2=1

Note: Maximum of 100 ITEMx/AMTx/QTYx sets per order.

DCNTx

Item-level discount applied to the corresponding ITEMx line. Applies to the total for that line item across all units.

Recommended

Type: Decimal

Examples

DCNT1=4.99

DCNT2=0

Note: If no item discount applies, use DCNTx=0 or omit the parameter for that item. The discount index must correspond to the ITEMx it applies to. Can be used in combination with the DISCOUNT (whole order) parameter.

S2S Examples

https://www.emjcd.com/u?CID=1234567&TYPE=123456&METHOD=S2S&CJEVENT=5f3ca1b2e4d94826b0a7c1d3e5f7a9b2&eventTime=2026-05-22T14:10:15-07:00&OID=Order145683&CURRENCY=USD&AMOUNT=49.99COUPON=CJ-COUPON

https://www.emjcd.com/u?CID=1234567&TYPE=123456&METHOD=S2S&CJEVENT=7890abcdef1234567890abcdef123456&AMOUNT=59.97&eventTime=2026-08-12T09:45:30Z&DISCOUNT=10&OID=SA112342&CURRENCY=USD&COUPON=CJ26&ITEM1=sku-001&AMT1=29.99&QTY1=2&DCNT1=5.00&ITEM2=sku-002&AMT2=14.99&QTY2=1&DCNT2=0&CUST_STATUS=Return

https://www.emjcd.com/u?CID=1234567&TYPE=123456&METHOD=S2S&CJEVENT=k9R2n7PqW4m1Xj5vZb8Lp3TfH6sV2y9N&eventTime=2026-08-12T09:45:30Z&OID=0002932&CURRENCY=USD