Gemini feed: no Allocations in message?

[Roy Doyle]

I'm seeing another weird (until it gets explained!) message type in the Gemini feed - occasionally I see messages that don't contain any <Allocation> elements - the message just contains the train ID info, but nothing's allocated to it - is this some sort of placeholder message, perhaps? i.e. 2W23 is in the system but currently nothing's allocated to it?

<TrainOperationalIdentification>

<TransportOperationalIdentifiers>

<ObjectType>PA</ObjectType>

<Company>9928</Company>

<Core>2W23Y0825317</Core>

<Variant>01</Variant>

<TimetableYear>2025</TimetableYear>

<StartDate>2025-11-19</StartDate>

</TransportOperationalIdentifiers>

<TransportOperationalIdentifiers>

<ObjectType>PA</ObjectType>

<Company>0070</Company>

<Core>2W23Y0825317</Core>

<Variant>01</Variant>

<TimetableYear>2025</TimetableYear>

<StartDate>2025-11-19</StartDate>

</TransportOperationalIdentifiers>

</TrainOperationalIdentification>

<OperationalTrainNumberIdentifier>

<OperationalTrainNumber>2W23</OperationalTrainNumber>

<ScheduledTimeAtHandover>2025-11-19T17:25:00</ScheduledTimeAtHandover>

<ScheduledDateTimeAtTransfer>2025-11-19T18:33:00</ScheduledDateTimeAtTransfer>

</OperationalTrainNumberIdentifier>

[Matthew Burdett]

I consider this a de-allocation message, removing anything assigned to that service. 

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[Peter Hicks]

Hi Roy

On Saturday, 22 November 2025 at 15:34, Roy Doyle <bob....@gmail.com> wrote:

I'm seeing another weird (until it gets explained!) message type in the Gemini feed - occasionally I see messages that don't contain any <Allocation> elements - the message just contains the train ID info, but nothing's allocated to it - is this some sort of placeholder message, perhaps? i.e. 2W23 is in the system 

but currently nothing's allocated to it?

This means nothing has been allocated, and probably something was allocated beforehand.

The documentation says that messages for a service replace any previous messages for a service.

Peter

[Roy Doyle]

Ahh, right - that makes sense - I did pick up on the bit in the docs about replacing any previous message, but couldn't figure out what the lack of Allocations meant. Thanks for clearing that up!