Prompt Details
Model
(claude-4-6-sonnet)
Token size
347
Example input
[TABLE NAME]: Employees
[COLUMN NAME]: Manager Name
[EXPRESSION]: RELATED(Departments.ManagerName)
[ERROR MESSAGE]: A relationship cannot be used because it is not active
[ColumnName]: ColumnName
Example output
Root Cause:
The expression uses IF(ISBLANK(Orders[ShipDate]), "Pending", "Shipped") but fails because the column ShipDate does not exist in the Orders table — the correct column name is Orders[DeliveryDate], causing a column reference error at refresh.
Corrected DAX:
Orders[Delivery Status] =
VAR vDeliveryDate = Orders[DeliveryDate] // Reference the correct delivery date column
VAR vIsBlank = ISBLANK(vDeliveryDate) // Check whether delivery date is blank
VAR vStatus =
SWITCH(
TRUE(),
vIsBlank, "Pending", // No delivery date recorded
NOT(vIsBlank), "Shipped" // Delivery date present
)
RETURN vStatus
Prevention Note:
Always verify column names using the Fields pane before writing DAX expressions, as column name mismatches are the most common cause of calculated column errors.
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CLAUDE-4-6-SONNET
Struggling with a broken DAX calculated column? Paste in your table name, column name, the expression you used, and the error you received — and get back the root cause, a corrected DAX expression, and a prevention note. Works for any Power BI data model and any industry. No guesswork, no forum trawling. Just a clear diagnosis and production-ready fix.
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Added 6 days ago
