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If merchant has activated order check value (MD5) verification then authorization request must contain the 'Checkvalue' parameter with correctly calculated value. Otherwise requests will be denied with error. The 'Checkvalue' parameter has to be generated as follows: uppercase(md5(uppercase(md5(SALT) + md5(Х)))), where SALT – secret word; Х – result of the following parameters string concatenation: merchant_id, ordernumber, orderamount, ordercurrency (without delimiters), + means string concatenation. |
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If merchant has activated order signature checking then authorization request must contain the 'Signature' parameter with correctly calculated value. Otherwise requests will be denied with error. See more details about order signature in 'Setting up an enterprise's technical interaction' manual. |