Issue 1)
I have 6 worksheets containing around 10000+ rows and about 25 columns each of data come in from 6 different teams. All the row headers are the same but all the data is varied. I need to do a risk analysis so want to compare the data of one column of each sheet. I just want any duplicate in the columns in question to auto highlight so I know there is a duplicate. Can someone tell me the formula or VLook up or function in order to do this quickly across so many sheets? I am hoping this can be done without creating more columns as these are working lists. Just a formula I can enter and point it to all 6 sheets to auto highlight as soon as a duplicate is found entered.
Say in each sheet it is claim number column I need to compare. The column is the same in every sheet.
I saw this question in a previous question but when I downloaded the excel example I could not find anywhere the formula to copy for my purposes.
How to highlight only one duplicate value from multiple duplicates?
Issue 2)
Same working worksheets as above. Is there a macro or something like this, that will auto highlight if a duplicate is entered in a single worksheet? So for example if user 1 enters worksheet A and adds data to column Claim Number which has this value already entered in column Claim number, it will auto highlight red saying this number has already been entered? I want to prevent in individual worksheets users adding duplicates. Makes my life hell as I need to compare 6 user sheets regularly and sometimes users forget and add the same data on two different days in the same sheet plus enter the same data then again in worksheet B. aaarrrggg!
Thanks in advance for your help!