Article - CS272971
Error "Attempt to add item '<Channel.Device.Tag>' Failed" in PTC Kepware Products
Modified: 10-Dec-2025
Applies To
- ThingWorx Kepware Server (legacy) 8.0 to 6.18
- Kepware Server (formerly KEPServerEX) 5.20.396.0 to 7.0
Description
- Kepware Server (formerly KEPServerEX) event log shows failed attempts to add items that no longer exist
- ThingWorx Kepware Server (legacy) Event log Error
- Attempt to add item '<Channel.Device.Tag>' failed
- Tag addition request by client application or server function, such as Data Logger plug-in, failed
- For example launch Quick Client and automatically build client project
- <Channel>.<Device> group is created in project while target tag is not added to the group
- For example launch Quick Client and automatically build client project
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