NGFW-Engineer Integration And Automation Practice Question
You are automating firewall policy updates using the XML API. You have successfully authenticated and retrieved an API key. When attempting to perform an 'edit' operation on a security policy, the API returns an 'Invalid Object' error, even though the object exists in the GUI. What is the most likely cause?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The XPath in the API call does not correctly specify the Device Group or Vsys context.
The XML API requires precise XPath syntax. If the object exists in the GUI but the API fails, it is often due to the object being nested within a specific Device Group or Vsys that was not properly specified in the XPath.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The API key does not have the 'Superuser' role.
Why it's wrong here
An API key requires specific permissions, but 'Superuser' is not strictly required if the role has administrative access to policies.
- ✓
The XPath in the API call does not correctly specify the Device Group or Vsys context.
Why this is correct
When managing objects via Panorama API, the XPath must reflect the hierarchy of the device group or vsys container.
- ✗
The XML document must be wrapped in a <request> tag.
Why it's wrong here
Standard XML API calls for config edits use <config> tags, not <request> tags.
- ✗
The API service is disabled on the management interface.
Why it's wrong here
If the API service were disabled, the error would be a connection timeout or 404, not an 'Invalid Object' error.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Palo Alto Networks exam blueprint
This NGFW-Engineer practice question is part of Courseiva's free Palo Alto Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NGFW-Engineer exam.