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Patti PaganoPatti Pagano 

Validation Rule: Dont allow specific values in a muliti picklist to be chosen together.

I have a multi pick list which has A, B, C, D.  I never want my users to be able to select A & B togher.  Stuck on this rule and cant get it to work.
Prateek Singh SengarPrateek Singh Sengar
Hi,
Please try something like
  
IF(AND(
INCLUDES(Fieldname, "A"),
INCLUDES(Fieldname, "B")), TRUE, FALSE)

 
SalesFORCE_enFORCErSalesFORCE_enFORCEr
Write a validation rule with this formula 
AND(
INCLUDES(Fieldname, "A"),
INCLUDES(Fieldname, "B")
)