Hello,
I have the following table
| Store | Date | Item | Inventory Qty | Diff | | Diff Correct |
| 021 | 24/02/2021 | 410856 | 251 | | | |
| 021 | 10/03/2021 | 410856 | 135 | -116 | | -116 |
| 021 | 19/04/2021 | 410856 | 220 | 85 | | 85 |
| 021 | 17/05/2021 | 410856 | 350 | 130 | | 130 |
| 021 | 16/06/2021 | 410856 | 186 | -164 | | -164 |
| 040 | 24/02/2021 | 410856 | 542 | 356 | | |
| 040 | 10/03/2021 | 410856 | 373 | -169 | | -169 |
| 040 | 19/04/2021 | 410856 | 60 | -313 | | -313 |
| 040 | 20/04/2021 | 410856 | 385 | 325 | | 325 |
| 040 | 06/05/2021 | 410856 | 13 | -372 | | -372 |
| 040 | 17/05/2021 | 410856 | 154 | 141 | | 141 |
| 040 | 18/05/2021 | 410856 | 264 | 110 | | 110 |
| 040 | 16/06/2021 | 410856 | 337 | 73 | | 73 |
| 021 | 24/02/2021 | 456734 | 156 | -181 | | |
| 021 | 10/03/2021 | 456734 | 265 | 109 | | 109 |
| 021 | 19/04/2021 | 456734 | 452 | 187 | | 187 |
| 021 | 17/05/2021 | 456734 | 70 | -382 | | -382 |
| 021 | 16/06/2021 | 456734 | 236 | 166 | | 166 |
| 040 | 24/02/2021 | 456734 | 123 | -113 | | |
| 040 | 10/03/2021 | 456734 | 235 | 112 | | 112 |
| 040 | 19/04/2021 | 456734 | 90 | -145 | | -145 |
| 040 | 20/04/2021 | 456734 | 423 | 333 | | 333 |
| 040 | 06/05/2021 | 456734 | 65 | -358 | | -358 |
| 040 | 17/05/2021 | 456734 | 321 | 256 | | 256 |
| 040 | 18/05/2021 | 456734 | 456 | 135 | | 135 |
| 040 | 16/06/2021 | 456734 | 245 | -211 | | -211 |
I have the store , the date , the item and the inventory qty in a chart. In the column Diff i have the expression
SUM([Inventory Qty]) - ABOVE(TOTAL SUM( [Inventory Qty]))
The result is not correct because substract all the values for all stores for all items one by one.
The result i want to have is the Diff Correct that substract the values only by store , item.
How can i manage this in order to have the results of the column Diff Correct in a chart ?
Thank you in advanced.
