query_unavailability_of_generation_units gives HTTPError: 400 Client Error with docstatus="A02"

[SeeBastion524]

When I want to query query_unavailability_of_generation_units with docstatus="A02" I get a HTTPError: 400 Client Error. When I switch to docstatus="A05" it works. Here is the minimal example for reproduction:

start = pd.Timestamp.today(tz="UTC").normalize() - pd.Timedelta(days=50)
end = pd.Timestamp.today(tz="UTC").normalize()
bidding_zone = "DE_LU"

df_ = entsoe_client.query_unavailability_of_generation_units(
country_code=bidding_zone,
start=start,
end=end,
docstatus="A02",
)

Is this my mistake or a bug?