paymentInformation. card.expirationMonth {#payment-info-card-exp-mo}
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Two-digit month in which the payment card expires.  
Format: MM  
Possible values: `01` through `12`. Leading `0` is required.

> IMPORTANT  
> This field is optional if your account is configured for relaxed requirements for expiration date. .

`Barclays` and `Streamline`
:
For Maestro (UK Domestic and International) cards, this value must be valid (01 through 12) but is not required to be a valid expiration date. In other words, an expiration date that is in the past does not cause `Visa Acceptance Solutions` to reject a request. However, an invalid expiration date might cause the issuer to reject a request.

`Chase Paymentech Solutions`
:
For encoded account numbers (paymentInformation.card.type or paymentInformation.tokenizedCard.type=`039`), set the value for this field to `12` if the card does not provide an expiration date.

Specifications {#payment-info-card-exp-mo_Specifications}
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* **Data Type:** String
* **Data Length:** 2

Mapping Information {#payment-info-card-exp-mo_Mapping}
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* **REST API Field:** paymentInformation.card.expirationMonth
* **SCMP API Field:** customer_cc_expmo
* **Simple Order API Field:** card_expirationMonth