Pathways and recommendations can throw 4xx error in case all mandatory API parameters are not sent in the API call.
# Debugging Steps
To investigate the issue and the reason, follow the steps below:
Contact your technical team to check the API call.
Check the API call for the mandatory parameters. Refer to the <a href="https://documentation.bloomreach.com/discovery/docs/pathways-and-recommendations#pathways" target="_blank">documentation</a> to know more. a. If yes, raise a ticket on the <a href="https://support.bloomreach.com" target="_blank">Bloomreach Support Portal</a> with the API call. b. If no, advise your technical team to fix it.
## Related Resources
**Bloomreach Discovery Product Documentation**
<a href="https://documentation.bloomreach.com/discovery/docs/pathways-and-recommendations#pathways" target="_blank">Pathways and Recommendations</a>
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