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This addresses a different case: A bank reports month-end account balances and must calculate annual balances without summing every day's snapshot. It is not the specific defect in 'Filter Sales by its row number instead of shifting calendar dates'.

Product familiarity is not evidence of suitability. The actual defect in this proposal is: Row position does not represent the previous calendar month.

This is reasoning supporting the preferred solution 'Use DATEADD on the marked date table with a one-month backward interval', but it does not directly name the defect in the proposed shortcut.

Approval of a proposed design is not evidence of working behavior. The required observation is: February's comparison returns the valid January sales period.

This belongs to a different case: A bank reports month-end account balances and must calculate annual balances without summing every day's snapshot. It does not validate the current change.

A future test is not yet observed operational evidence. The verification must establish: February's comparison returns the valid January sales period.

This observes the original approach but is not an additional action: February's comparison returns the valid January sales period.

This remains unsuitable for the original situation: Row position does not represent the previous calendar month. It also does not meet the changed need.

This is the already implemented original solution: Use DATEADD on the marked date table with a one-month backward interval. DATEADD shifts the date context for a period comparison. It does not itself solve the new requirement.

LASTDATE returns a boundary, not a running aggregate. The proposed shortcut 'Use LASTDATE alone as though it sums all previous dates' fails the documented need.

This might be appropriate after a different requirement arises: The result must restart at the beginning of each fiscal year. It is not the best initial response to the stated case.

This addresses a separate source situation: A model repeats selected-measure time transformations such as YTD and Prior Year across dozens of base measures. It does not directly satisfy this case's priority.

Product familiarity is not evidence of suitability. The actual defect in this proposal is: LASTDATE returns a boundary, not a running aggregate.

This is reasoning supporting the preferred solution 'Use CALCULATE with a date filter including all dates up through the current point', but it does not directly name the defect in the proposed shortcut.

This addresses a different case: A model repeats selected-measure time transformations such as YTD and Prior Year across dozens of base measures. It is not the specific defect in 'Use LASTDATE alone as though it sums all previous dates'.

This belongs to a different case: A model repeats selected-measure time transformations such as YTD and Prior Year across dozens of base measures. It does not validate the current change.

A future test is not yet observed operational evidence. The verification must establish: The plotted cumulative measure never drops when nonnegative daily sales are added.

Approval of a proposed design is not evidence of working behavior. The required observation is: The plotted cumulative measure never drops when nonnegative daily sales are added.

This remains unsuitable for the original situation: LASTDATE returns a boundary, not a running aggregate. It also does not meet the changed need.

This is the already implemented original solution: Use CALCULATE with a date filter including all dates up through the current point. A running total extends evaluation across prior dates up to each position. It does not itself solve the new requirement.

This observes the original approach but is not an additional action: The plotted cumulative measure never drops when nonnegative daily sales are added.

This might be appropriate after a different requirement arises: Management wants average daily balance for the year instead. It is not the best initial response to the stated case.

Adding snapshots over time overstates closing financial balances. The proposed shortcut 'Sum all daily Balance rows to obtain the year-end balance' fails the documented need.

This addresses a separate source situation: A margin percentage should display BLANK rather than crash when revenue is zero. It does not directly satisfy this case's priority.

This is reasoning supporting the preferred solution 'Use a semi-additive closing balance measure based on the last relevant date', but it does not directly name the defect in the proposed shortcut.

Product familiarity is not evidence of suitability. The actual defect in this proposal is: Adding snapshots over time overstates closing financial balances.

This addresses a different case: A margin percentage should display BLANK rather than crash when revenue is zero. It is not the specific defect in 'Sum all daily Balance rows to obtain the year-end balance'.

This belongs to a different case: A margin percentage should display BLANK rather than crash when revenue is zero. It does not validate the current change.

A future test is not yet observed operational evidence. The verification must establish: The year result equals the final available closing balance, not all daily balances.

Approval of a proposed design is not evidence of working behavior. The required observation is: The year result equals the final available closing balance, not all daily balances.

This is the already implemented original solution: Use a semi-additive closing balance measure based on the last relevant date. Balance snapshots are additive across accounts but not across time. It does not itself solve the new requirement.

This observes the original approach but is not an additional action: The year result equals the final available closing balance, not all daily balances.

This remains unsuitable for the original situation: Adding snapshots over time overstates closing financial balances. It also does not meet the changed need.