Splunk Dev

REST API Modular Input: After creating a custom search command as a Python script, why am I getting the following "parse transport header" error message?

kiril123
Path Finder

Hello,

I have created a custom search command in Splunk as a Python script. When I run the command in Splunk SPL, I get the following error message:

ERROR ChunkedExternProcessor - Failed attempting to parse transport header

Does anyone has any suggestions?

This is the output of commands.conf:

[sankey]
chunked = true
enableheader = false
filename = system_python.path
command.arg.1 = sankey.py

jpass
Contributor

Did you ever figure this out? I'm having the same problem.

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Automating Threat Operations and Threat Hunting with Recorded Future

    Automating Threat Operations and Threat Hunting with Recorded Future June 29, 2026 | Register   Is your ...

Keep the Learning Going with the New Best of .conf Hub

Hello Splunkers, With .conf26 getting closer, there’s already a lot of excitement building around this year’s ...

Splunk Community Badges!

  Hey everyone! Ready to earn some serious bragging rights in the community? Along with our existing badges ...