Is it possible to do a custom data validation if the values in the cells for that particular field alternate?
For example, my organization works with 3 different groups, so each group has its own acryonm, which I know will be consistent. For example, the groups are called KORD, CIDKP-C, and CIDKP-S. However, in the cells for this field, II also want to include the date of each transaction and keep track of each transaction with an ID number. So it will be CIDKP-C 2011-01, CIDKP-C 2011-02, etc... or KORD 2011-01, KORD 2011-02 etc..., or CIDKP-S 2011-01, CIDKP-S 2011-02, etc....
Is it possible to set a field for data validation with such criteria?