The %AUTHOR_PAYMENT_DEEP_LINK% merge field used in fee-related letters automatically logs the Author in and goes directly to the Fees and Payments page for the related submission.
Because it will fully log the Author into the publication, it is best to set an expiration policy on this deep link. An expiration ensures that the link can be used only a certain number of times before it is no longer valid.
The expiration can be set based on number of clicks or number of days, or a combination of the two.
Go to PolicyManager > Commerce Manager > Set Author Payment Deep Link Expiration Policy.
To keep the link active indefinitely, do not check either box. If both boxes are checked (and numbers entered), the link expires when the first criterion is met.
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