Hi there.
I was wondering if it was possible to create a custom data validation rule such that the dropdown list displays only those entries which haven't been entered in the previous rows.
For Example
Database
In Sheet having name "Source_Sheet", contains a list of entries for ID No.s of various customers.
Cells C2:C100 contains a list of ID Numbers. ie. 01 to 99. This list will appear as a dropdown menu in Entry Sheet.
Entry Sheet
In Sheet having name "Entry_Sheet", the data entry operator enters details pertaining to customers
Column B:B is specifically meant for entering ID. However it is expected of the user to select from the dropdown list to avoid errors.
The main emphasis is on the fact that one user ID can be entered only once.
Hence to ease the operator's functions, I was wondering if it was possible to ignore entries in the drop down list of column B if it has been previously entered.
So Suppose,
If in the cell B1 the dropdown list should display all values ie. 01-99. Now assume the user selects 23 from the list.
Now when he goes to cell B2, all values except 23 should be displayed in the dropdown list. Now from the above list assume the user selects 54.
Next when he goes to cell B3, all values except 23 and 54 should be displayed, so on and so forth.
I was wondering if doing something like this would be possible.
Thanks for your help.
I was wondering if it was possible to create a custom data validation rule such that the dropdown list displays only those entries which haven't been entered in the previous rows.
For Example
Database
In Sheet having name "Source_Sheet", contains a list of entries for ID No.s of various customers.
Cells C2:C100 contains a list of ID Numbers. ie. 01 to 99. This list will appear as a dropdown menu in Entry Sheet.
Entry Sheet
In Sheet having name "Entry_Sheet", the data entry operator enters details pertaining to customers
Column B:B is specifically meant for entering ID. However it is expected of the user to select from the dropdown list to avoid errors.
The main emphasis is on the fact that one user ID can be entered only once.
Hence to ease the operator's functions, I was wondering if it was possible to ignore entries in the drop down list of column B if it has been previously entered.
So Suppose,
If in the cell B1 the dropdown list should display all values ie. 01-99. Now assume the user selects 23 from the list.
Now when he goes to cell B2, all values except 23 should be displayed in the dropdown list. Now from the above list assume the user selects 54.
Next when he goes to cell B3, all values except 23 and 54 should be displayed, so on and so forth.
I was wondering if doing something like this would be possible.
Thanks for your help.
