Strange reason for a train cancellation.

[19Gnasher69]

I noticed that the 0627 Leeds to Skipton train was cancelled this morning for a seemingly spurious reason. Can anyone explain what this means?

 

[FGW_DID]

This one cropped up very recently:

Planned Train Replaced by a Slower One - But it was an IET?

1B07 the 8.48 from Paddington to Pembroke Dock was cancelled between Swansea and Pembroke Dock (Sat 24 May 2025) due to “planned train being replaced by a slower one” according to RTT. However, this train from London was an IET and I see nothing going west to south Pembrokeshire as an...

www.railforums.co.uk

 

[19Gnasher69]

This one cropped up very recently:

Planned Train Replaced by a Slower One - But it was an IET?

1B07 the 8.48 from Paddington to Pembroke Dock was cancelled between Swansea and Pembroke Dock (Sat 24 May 2025) due to “planned train being replaced by a slower one” according to RTT. However, this train from London was an IET and I see nothing going west to south Pembrokeshire as an...

www.railforums.co.uk

Cheers.
Looking through that thread, I guess that transportphoto’s comment about the reasons on RTT not necessarily being accurate may well apply here. Certainly as there’s nothing slower on the Airedale Line than the EMUs on the Triangle.

 

[LA50041]

Cheers.
Looking through that thread, I guess that transportphoto’s comment about the reasons on RTT not necessarily being accurate may well apply here. Certainly as there’s nothing slower on the Airedale Line than the EMUs on the Triangle.

The reason given in Trust is ALOC STOCK, basically the stock move from Neville Hill didn't run

 

[D6130]

Cheers.
Looking through that thread, I guess that transportphoto’s comment about the reasons on RTT not necessarily being accurate may well apply here. Certainly as there’s nothing slower on the Airedale Line than the EMUs on the Triangle.

75 mph class 150 vice 100 mph class 331 or 333 (limited to 90 on the Airedale line)?

 

[skyhigh]

The 333 that was supposed to be on 5B03 was unavailable so the 331 from 5H08 was stepped up to cover the Doncaster diagram, as a cancellation there has a bigger passenger impact.

 

[JN114]

Realtime Trains has made its own “human” translations of the internal delay attribution codes; and then pushes them out as the cancellation reason.

It is largely okay in the majority of circumstances; but in the case of code ‘MS’ I’m not sure they’ve got it quite right. We certainly see threads like this one pop up fairly regularly.

‘MS’ is used within the industry for any allocations issue - alternative traction; but also unavailable traction, delays caused by swapping trains (either to different or same traction type), control errors regarding allocations and so on.

Using the “official” delay reasons from Rail Delivery Group / Darwin, it should probably be “More trains than usual requiring repairs at the same time”; but there’s an argument that’s not wholly accurate either.

This page here from the open rail data wiki shows what all the codes output by industry are; and what the industry’s translation is:-

Delay Attribution Guide - Open Rail Data Wiki

 

[Travelmonkey]

As others have pointed out there is codes like the one in the image above VA

*screenshot of RTT with text saying "this service was cancelled between Nottingham and Derby due to Disorder (VA)