I am trying to compare the values in four different columns to determine if all of the non-null values are the same. I was considering using a nested IF-THEN formula but due to the number of permutations I keep getting lost. Is there a simpler solution? I have attached a sample file with my data and the table below shows what I hope to achieve.
| Client Code | Client Name | Source 1 | Source 2 | Source 3 | Source 4 | Desired Result |
| CST1 | Customer 1 | 20 | 20 | null | null | Valid |
| CST2 | Customer 2 | 20 | null | 20 | null | Valid |
| CST3 | Customer 3 | 20 | null | null | 20 | Valid |
| CST4 | Customer 4 | 20 | null | null | null | Valid |
| CST5 | Customer 5 | 20 | null | null | 15 | Review |
| CST6 | Customer 6 | 20 | 20 | 15 | 20 | Review |
| CST7 | Customer 7 | null | null | 15 | 20 | Review |
Thanks.
Bruce