What does the ATT on HMRC-SA-SA100-ATT stand for?

Just curious

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Some of HMRC's FBI receipts start "HMRC has received the HMRC-SA-SA100 document ref ...." but some state HMRC-SA-SA100-ATT. What does the "ATT" suffix mean?

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The triggle is a distant cousin of the squonk (pictured)
By Triggle
03rd Dec 2016 10:25

There is an attachment to the return?

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Replying to Triggle:
Morph
By kevinringer
03rd Dec 2016 10:55

I though it meant "attachment" but the majority of returns don't have one.

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RLI
By lionofludesch
03rd Dec 2016 10:51

They're Tax Technicians ?

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avatar
By Manchester_man
03rd Dec 2016 13:12

I am reliably informed it stands for Action - To Trash.

It only happens on some returns. I don't know what the criteria is for labelling such returns as Trash.

Thanks (1)
James Reeves
By James Reeves
03rd Dec 2016 14:04

It is the message class, which tells the gateway how to validate the contents of the submission:

HMRC-SA-SA100 (SA100 without attachments)
HMRC-SA-SA100-ATT (SA100 with attachments)
HMRC-SA-SA800 (SA800 without attachments)
HMRC-SA-SA800-ATT (SA800 with attachments)
HMRC-SA-SA900 (SA900 without attachments)
HMRC-SA-SA900-ATT (SA900 with attachments)

Thanks (3)
Replying to James Reeves:
Morph
By kevinringer
04th Dec 2016 09:49

Thanks James, I thought it meant attachments but almost all have the ATT suffix yet the majority don't have attachments. Perhaps our software is creating attachments. I know it does for CGT, perhaps it does for other things too.

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Replying to kevinringer:
The triggle is a distant cousin of the squonk (pictured)
By Triggle
04th Dec 2016 10:06

The SA100 is the main body of the personal tax return.

Perhaps if you also submit a supplementary page (Employment Income page, UK Rental pages etc.) that counts as an attachment and it doesn't necessarily mean that a PDF file has been attached?

Thanks (1)