If you encounter the error Invalid U3PD Code when trying to access the Rate Breakup Sheet for an item, the software has found an issue with the data in the Rate Breakup Sheet.
Fig 1. Invalid U3PD Code
To get around this error:
1. Insert a new row below the faulting line.
Fig 2. Insert a new row
2. On each cell/column, press F4 on your keyboard or right mouse click on the new row and choose copy above cell to copy down the data into the new row.
Fig 3. F4 Copy above cell
3. Delete line that is causing the issue
4. You should be able to access the Rate Breakup Sheet for this new item.