Parameter <slipno> is used for reconciliation of authorization reports from Assist and financial reports on compensation from the processing or acquiring bank.
Processing  | Operation type  | Value of <slipno> parameter, which is sent in Assist request  | Example  | 
Multicard  | Payment  | <slipno> value of processing  | <slipno>11111111</slipno>  | 
On-line cancellation  | no  | <slipno></slipno>  | |
Partial cancellation  | <slipno> value of payment  | <slipno>11111111</slipno>  | |
Refund  | New <slipno> value  | <slipno>11222111</slipno>  | |
Other processings  | All  | no  | <slipno></slipno>  |