| Bug ID Number |
BUG-000157566 |
| Submitted | April 17, 2023 |
| Last Modified | May 20, 2026 |
| Applies to | ArcGIS Pro |
| Version found | 3.0 |
| Operating System | Windows OS |
| Operating System Version | 10.0 64 Bit |
| Status | As Designed
After review by the development team, it has been determined that this behavior is as designed. See the Additional Information section for details.
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Additional Information
Adding a new row to an attachment table does honor default settings for user-created columns in the attachment table. However, row inserts for attachments do not update default values in user-created columns by design. This is also true when working with attribute rules and Arcade, which can read related record values but cannot write directly to a related table such as the attachment table. This is the current design.
Workaround
Python scripting can be used to add an attachment and then update a user-created column in the attachment table with a specific value.
Steps to Reproduce