Allianz SE prices error:

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Allianz SE prices error:

I wanted to query "Historic Price Search" for quotes for this epic (with my live account credentials):
"epic": "ED.D.ALVGY.CASH.IP"
"instrumentName": "Allianz SE"

But I get an error
"errorCode": ""

I can query "Market Details" with this epic though.

Could sb please explain why I get this error and if I can avoid it? I would like to have at least 5min data from DAX companys for the last five years.

Thanks in advance!