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Description
See http://www.blesta.com/forums/index.php?/topic/5290-bitpay-multi-invoices-issue/
It may be that attempting to pay multiple invoices. When serialized with their amounts and passed to the gateway, the max length is 100 characters. However, it may fail with fewer characters. We will need to test.
We may need to update the gateway to limit the length of that field, and simply ignore paying specific invoices that exceed the length. Alternatively, we could display an error that too many invoices are being paid at once, and to select fewer invoices to pay before continuing.