GET /sapi/v1/lending/union/interestHistory response missing productName

Hello,

The response of the endpoint /sapi/v1/lending/union/interestHistory (Binance API Documentation) seems to be inconsistent for some old data.

One of our customers has this entry returned and as you can see, the field productName is missing.
{"time": 1598923040000, "asset": "LEND", "interest": "0.01071614", "lendingType": "DAILY"}

A fix would be appreciated.
Best regards,