This parameter can be used to filter the result for a particular classification. If ommited no filtering is done and all classifications with the corresponding values are extracted.

An internal unique ID for each API request which can be used for diagnosing issues and corresponding with support.

For test environment, specific test environment name should be passed (e.g. "bwu15"). Contact Fiserv OmniPay Project team to get confirmation on the test environment to be used. For production, value "prod" should be populated.

Institution number (8-digit number) associated with the merchant. This information defines the acquirer for the merchant.