Failure details: The number is out of range of a 64 bit integer value.

[LYeo87]

Hiya, Please could you advise on what tools I could use to help determine which columns have been affected?

[amitchandak]

@LYeo87 , In case you have access to power query, open that and check of error, check the column that have data type as whole number, convert those into decimal

[LYeo87]

Hiya,

Thank you for your reply: I dont have access as per below:

[LYeo87]

To me it looks like the data starts to appear messy once this step is applied:

[LYeo87]

@amitchandak any idea where i can start on the above?