C_TS4FI Financial Accounting Practice Question
During month-end close, an accountant attempts to post a vendor invoice in SAP S/4HANA but receives an error stating the posting period is not open. The invoice date is in the current month, and the posting date is set to the last day of the previous month. The company uses posting period variant 1000. Which configuration setting must be adjusted to allow this posting?
⚠ Common exam trap
The trap here is assuming that document types or field status groups control posting periods, when in fact only the posting period variant determines period openness.
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
✓
Open the previous month's posting period in the posting period variant for the relevant account type.
The posting period variant defines which accounting periods are open for posting for each account type. When a posting date falls in a closed period, the system blocks the transaction. To allow the posting, the previous month's period must be opened for the relevant account type in the posting period variant. This is a common month-end close adjustment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Open the previous month's posting period in the posting period variant for the relevant account type.
Why this is correct
The error occurs because the posting date falls in a period that is closed. To resolve this, the previous month's period must be opened in the posting period variant for the account type (e.g., vendor). This allows postings with a posting date in that period. The variant controls which periods are open per account type, so adjusting it directly addresses the issue.
- ✗
Modify the field status group of the vendor reconciliation account to allow posting to closed periods.
Why it's wrong here
The field status group controls which fields are required, optional, or suppressed during posting, but it does not govern period openness. Period control is separate and managed via the posting period variant. Changing the field status group would not enable posting to a closed period and could cause other data entry issues.
- ✗
Adjust the fiscal year variant to include an additional period for the previous month.
Why it's wrong here
The fiscal year variant defines the number of posting periods and their relationship to the calendar year, but it does not determine whether a period is open or closed. The fiscal year variant is typically static and not changed for period control. Modifying it would affect the entire company code and not resolve the specific period lock.
- ✗
Change the document type to one that allows posting to closed periods.
Why it's wrong here
Document types do not control whether a posting period is open or closed. They define number ranges and field statuses, but period control is managed by the posting period variant. Changing the document type would not override the period lock, so the error would persist. This option misunderstands the role of document types in SAP S/4HANA.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official SAP exam blueprint
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