question Long UserID in Community Central forum

Long UserID

Diego Zuniga — Fri, 31 Jul 2026 16:37:30 GMT

We currently have a user with a very long User ID, which is causing an issue when uploading files through the Attachment widget in Catalog Items.

The user's User ID is:

name1name2.lastname1lastname2@email.com

Due to its length, the system does not allow attachments to be added.

However, I cannot modify the User ID because doing so would impact the user's access to the environment and could also affect SSO authentication.

What options do I have to resolve this issue without changing the User ID?

Re: Long UserID

Tanushree Maiti — Fri, 31 Jul 2026 18:00:24 GMT

Hi @Diego Zuniga ,

For one of our clients, we faced the same issue because the domain name was long. As a result, when the user ID was also long, it got truncated.

To address this, we increased the user ID field length from 40 to 80 characters (if I recall correctly). In our case, this change did not affect SSO.

You may want to test this in your sandbox once to confirm it works as expected.

Re: Long UserID

radha050903 — Fri, 31 Jul 2026 18:14:10 GMT

Hello @Diego Zuniga ,

Yes, this can happen because (sys_user.user_name) is a String field with a fixed maximum length. If the user's email ID exceeds that limit, which cause issues.

You can increase the Maximum Length of the user_name field by navigating to System Definition → Dictionary (sys_dictionary), searching for the user_name field on the sys_user table, updating the Maximum Length (for example, from 40 to 80), and then testing the attachment upload.

I strongly recommend validating this change .

Re: Long UserID

yashkamde — Sat, 01 Aug 2026 07:44:44 GMT

Hello @Diego Zuniga ,

Lokk for the property name : glide.attachment.max_filename_length

If it doesn't exist, I would suggest create it manually:

Name: glide.attachment.max_filename_length
Type: integer
Value: e.g 1024

Also you can look for file_name gets built in the Attachment widget and shorten that concatenation.

If my response helped mark as helpful and accept the solution.

Re: Long UserID

DavidW447091066 — Sat, 01 Aug 2026 10:34:15 GMT

I wouldn’t change the User ID if it could affect SSO or access. Check with support whether this is a known Attachment widget limitation or if there’s a patch/workaround. Another option is to use an alternative attachment method until the issue is fixed.

Re: Long UserID

Danish Bhairag2 — Sat, 01 Aug 2026 15:00:25 GMT

@Diego Zuniga ,

Please update the field length of User ID field from 40 to 80/100 by navigating to Configure-> table of sys_user form.

This will tackle your issue without any other impact.

Thanks,

Danish Bhairagdar