Troubleshooting dbt Model Failures: Need Help with Incremental Model Logic !!

Hi everyone,

I am encountering an issue with one of my dbt models and I could use some guidance. I have set up an incremental model., but it fails to run successfully on subsequent runs. Initially…, the model works fine, but when I try to run it again with new data, dbt throws an error.

The model uses the is_incremental() function to only process new data.
I have defined a unique key and a filter for new data based on a timestamp field.
The error message suggests something related to how the incremental logic is being applied but I am not sure what part is breaking.

Has anyone else faced similar issues when using incremental models: ?? What’s the best way to troubleshoot this: ?? I have already checked my SQL and configuration but any additional tips or debugging strategies would be appreciated. I have also read this thread https://discourse.getdbt.com/t/incremental-load-logic-failed-in-dbt-for-initial-load-devops-engineer but couldn’t get any helpful insights.

Thanks in advance for your help !!

With Regards,
Marcelo Salas

Hi Marcelo!

Could you please share the error message and at least the structure of your model configuration?