'Tim-Api REVERSAL Function

I want to process a refund with tim-api. but after the refund request I get an error of "unknown reference number".

I couldn't find a parameter to send as a reference number.

How can I fix this?

terminal.transactionAsync(TransactionType.REVERSAL, new Amount(10.0, Currency.EUR));

Output:

SIXML_UNKNOWN_REFERENCE_NUMBER

java android payment

Sources

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