You applied Table.PromoteHeaders but got an error saying "Expression.Error: The column 'Name' of the table wasn't found." What is the most likely cause?

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Power BI - Data Cleaning with Power Query

You applied Table.PromoteHeaders but got an error saying "Expression.Error: The column 'Name' of the table wasn't found." What is the most likely cause?

AThe first row does not contain valid header names.

BThe data types of columns are incompatible.

CYou used the wrong function name.

DThe table is empty with no rows.

Step-by-Step Solution

Solution:

Step 1: Understand error context
The error "The column 'Name' of the table wasn't found" occurs when code tries to reference [Name] after promotion, but the column doesn't exist.
Step 2: Identify promotion effect
Table.PromoteHeaders sets column names from the first row's values. If 'Name' is missing from the first row, no 'Name' column is created.
Final Answer:
The first row does not contain valid header names. -> Option A
Quick Check:
First row lacks expected header 'Name' [OK]

Quick Trick: Ensure first row contains expected header names like 'Name' [OK]

Common Mistakes:

Thinking empty table causes this specific column error (promotion fails differently)
Blaming data types (causes type errors, not missing columns)
Assuming wrong function (causes syntax error)

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You applied Table.PromoteHeaders but got an error saying "Expression.Error: The column 'Name' of the table wasn't found." What is the most likely cause?

Step 1: Understand error context

Step 2: Identify promotion effect

Final Answer:

Quick Check:

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