Dataflow Gen2 Input Parameter Issue with Date-Time value

[EricParvin]

The data pipeline is passing in the string parameter value 2025-05-21T13:00:00Z to a dataflow gen2. The parameter in the dataflow is of type text and is used in an ODATA query. There error is Error Details: We encountered an error during evaluation. Details: Unknown evaluation error code: 104100

If I parse the date and time into separate variables in the data pipeline and pass to the variables in the dataflow and append them in Power Query, it works. 

What is the expectation for passing string parameters to a dataflow gen2?

[v-prasare]

@EricParvin, As we haven’t heard back from you, we wanted to kindly follow up to check if the solution provided for your issue worked? or let us know if you need any further assistance here?

Thanks,

Prashanth Are

MS Fabric community support

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly and give Kudos if helped you resolve your query

[EricParvin]

@Akash_Varuna The ISO 8601 standard is used in ODATA queries to for date-time values used in the filter clause. The dataflow gen2 also use the ISO 8601 standard in Power Query for the date-time clause in M code. The expectation is that a dataflow gen2 should accept the value 2025-05-27T14:00:00Z and parse the value correctly. I should not have to pass in a separate value for the date and time and combine in the M code. 

Please let me know if you need further details. Thanks!

[v-prasare · Accepted solution]

Hi @EricParvin,

Define your parameter as datetime in the dataflow, not text, if that’s how it’s used in M.

If you must use text, manually cast it to a datetime inside Power Query using DateTimeZone.FromText() or DateTime.FromText()

If your DateField is just datetime, strip the timezone from the parameter. This keeps the DateField type as datetime, and converts the parameter to match:

try below query i tried to repro:

let
Source = Table.FromRecords({
[ID = 1, DateField = #datetime(2025, 05, 21, 12, 0, 0)],
[ID = 2, DateField = #datetime(2025, 05, 21, 14, 0, 0)]
}),
DateTimeParsed = DateTime.From(DateTimeZone.FromText(DateTimeParam)),
Filtered = Table.SelectRows(Source, each [DateField] > DateTimeParsed)
in
Filtered

Thanks,

Prashanth Are

MS Fabric community support

[EricParvin]

As of now, input parameters for a dataflow gen2 do not allow for date/time type. I am limited to string. 

I will try this suggestion to see if it makes a difference in the ODATA query. 

[v-prasare]

@EricParvin, As we haven’t heard back from you, we wanted to kindly follow up to check if the solution provided for your issue worked? or let us know if you need any further assistance here?

Thanks,

Prashanth Are

MS Fabric community support

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly and give Kudos if helped you resolve your query

[v-prasare]

@EricParvin,

As we haven’t heard back from you, we wanted to kindly follow up to check if the solution provided for your issue worked? or let us know if you need any further assistance here?

@Akash_Varuna Thanks for your prompt response.

Thanks,

Prashanth Are

MS Fabric community support

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly and give Kudos if helped you resolve your query

[Akash_Varuna]

Hi @EricParvin  It might be because the 2025-05-21T13:00:00Z string isn't being interpreted correctly in the ODATA query due to formatting issues. Try passing the datetime as a plain string, like 2025-05-21 13:00:00, or ensure the format matches what ODATA expects another way you can try is to pass the date and time separately and combine them in Power Query, as this approach has already worked for you.