MB-920 Describe Dynamics 365 Finance Practice Question
During a month-end close, a Dynamics 365 Finance user encounters an error when trying to post a vendor invoice. The invoice has been approved but the system shows 'Invoice posting failed due to account validation'. 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 account combination used is not valid in the chart of accounts.
The most likely cause is an invalid account combination in the chart of accounts (Option D). When a vendor invoice is approved but fails to post with an account validation error, it typically indicates that the debit or credit account specified on the invoice lines does not exist or is not properly configured in the general ledger. Option A is incorrect because a vendor on hold would prevent payment, not invoice posting and validation. Option B is incorrect because the invoice has already been approved, so approval status is not the issue. Option C is incorrect because general ledger journal posting is part of the invoice posting process, not a separate prerequisite. Therefore, the account combination validation failure during the invoice posting process is the most common cause.
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 vendor is on hold in accounts payable.
Why it's wrong here
Vendor holds prevent payment, not posting.
- ✗
The invoice has not been approved by the workflow.
Why it's wrong here
Approval status does not affect account validation.
- ✗
The general ledger journal for the invoice is not yet posted.
Why it's wrong here
General ledger journal entries are not directly related.
- ✓
The account combination used is not valid in the chart of accounts.
Why this is correct
Invalid account combinations trigger account validation errors during posting.
Go deeper
Related to this question
About these practice questions
Courseiva writes every MB-920 question from scratch — 930 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MB-920 practice question is part of Courseiva's free Microsoft 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 MB-920 exam.