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How do resolve Error: Invalid Expression in a workflow formula

in Ask A Guru 12 comments

Hello - I am using the below formula in a workflow Set field Value action to join the value of a custom field with the letter 'C' if a check box field is checked.

Example:

custevent1 = Odessa

custevent_la_comptruck = checked

The result should be 'Odessa C'. Instead, the result is: ERROR: Invalid Expression

{custevent1} || CASE WHEN {custevent_la_comptruck} = 'T' THEN ' (C)' ELSE '' END

I've tried several different versions of the formula, using IF instead of Case When. Any suggestions? Thanks!

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