Why am I getting error "Cannot find item for POST arg_name=..." trying to update inputs.conf (scripted inputs) through setup.xml?

[Vidd]

Hi,

I'm trying to update update a stanza within inputs.conf so I can change the cron schedule on a scripted input.

On the setup screen, it displays the value as expected. However, when submitting the page, I get the following error:

Encountered the following error while trying to update: In handler 'localapps': Cannot find item for POST arg_name="/data/inputs/script/%24SPLUNK_HOME%252Fetc%252Fapps%252F<my_app_name>%252Fbin%252F<script>.py/interval"

Looking at the splunkd.log, I found the following error:

08-16-2016 03:33:59.059 -0700 WARN  SetupAdminHandler - could not find matching input for POST arg_name=/data/inputs/script/%24SPLUNK_HOME%252Fetc%252Fapps%252F<my_app_name>%252Fbin%252F<script>.py/interval

For reference, here are excerpts from inputs.conf and setup.xml:

[script://$SPLUNK_HOME/etc/apps/<my_app_name>/bin/<script>.py]
passAuth = splunk-system-user
disabled = false
interval = 0 3 * * * 

<block title="Add-on settings"
     endpoint="data/inputs/script"
     entity="%24SPLUNK_HOME%252Fetc%252Fapps%252F<my_app_name>%252Fbin%252F<script>.py">
<input field="interval">
  <type>text</type>
</input>
</block>

This seems to match the example in documentation, so I'm not sure what to try. Any tips for debugging this?
I tried defining a custom endpoint, and while it could read the value, it couldn't update it.
https://docs.splunk.com/Documentation/Splunk/6.4.2/AdvancedDev/SetupExample1

[splunk_mkhan]

I am facing same issue, did you find any solution
Its working fine at linux machine but getting this error on windows

Encountered the following error while trying to update: In handler 'localapps': Cannot find item for POST arg_name="/admin/script/%24SPLUNK_HOME%5Cetc%5Capps%5Cmy_app%5Cbin%5Cmy_script.py%2015/enabled"

inputs.conf:

 [script://$SPLUNK_HOME\etc\apps\my_app\bin\my_script.py 15]
 disabled = 0

setup.xml:

 <block title="my script setting"
             endpoint="admin/script"
             entity="%24SPLUNK_HOME%5Cetc%5Capps%5CiSIGHTPartners_ThreatScape_App%5Cbin%5Cfetch_indicators.py%2015">
     <input field="enabled">
         <label>Enable</label>
         <type>bool</type>
     </input>
 </block>

[hardikJsheth]

You need to update the entity as follows as per stanza in your inputs.conf

%24SPLUNK_HOME%252Fetc%252Fapps%252F<my_app_name>%252Fbin%252F%3Cscript%3E.py

Also verify that this REST endpoint is available under https://ip:managementport/servicesNS/nobody/

[Vidd]

Ah, thanks but the script name was just a placeholder. It's correct in the actual app, I assume, since it loads the cron value from inputs.conf. I've checked and the script appears as an endpoint within the services list.

Thanks, though.