[Spce-user] API not accepting (valid?) billing fee value

[Mark van Herpen]

Hello,

I'm trying to update the offpeak_follow_rate of a single billing fee via
the API.

I'm sending this in the PUT method:

-snip-
"offpeak_follow_rate": 6.669999999999999e-5,
-snip-

The value is not a string, but a float type. This is 0.0000667 but in
scientific notation: 6.669999999999999e-5

The error I get in the logs is:
field='offpeak_follow_rate', input='6.67e-05', errors='Must be a number.
May contain numbers, +, - and decimal separator '.''","code":"422"

According to my knowledge json should allow 6.669999999999999e-5 as a
valid number, but the API isn't allowing this.

Is this a bug? Feature? Or am I doing something wrong?

I'm using 3.8.4 LTS.

Kind regards,

Mark van Herpen