ccvs_lookup() fetches and returns information about a transaction with the status given by status , which must be a valid CCVS status string. Since there may be many transactions with a given status at any one time, you use index to indicate which one you want. For instance, if you know there are several authorized but unprocessed transactions in the system and you want to find out the invoice name for the fifth one, you give a status ofauth and an index of5. Counting starts from1. session must be a valid session ID as returned by ccvs_init() .
If no matching transactions were found, NONE is returned.
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