Conditional show of Accept, Re-assign buttons

Question

Hi, 
 If a user is part of 2 groups: Assistant and Manager. 
 Same user who submitted a task as an Assistant shouldn't be able to access next task in the flow as Manager. 
 Is there a way not to show/disable the accept and reassign buttons when the same user tries to claim the task? 
 Or can we show an error message when trying to accept? 
 Any help/ideas are appreciated. 
 Thanks, Keerthi

Konduru Chaitanya · Answer

This should work fine if you can remove the user who has completed the 1st task (Save the tp!owner in a process variable from the 1st UIT output) from the list of users in the assignment of the task followed by the first one. below is a code you can reuse for that purpose. 
 a!localVariables(
 local!groupMembers: a!groupMembers(group: cons!YOUR_GROUP_CONSTANT).data,
 remove(
 local!groupMembers,
 wherecontains(
 tostring(pv!ownerOne),
 touniformstring(local!groupMembers)
 )
 )
)

Mike Schmitt · Answer

Pass the username of the previous user into the Manager Review task. You won't be able to disable the "accept" button, but you can do on-form checks to check whether the task's viewer is the same as the previous user, and display a validation message alerting them that they are not allowed to perform that review. Then they could either use the OOB "reject" button or, as a special case, you could build a custom Submit Button saying something like "send back to reviewer group", which would simply exit the task and loop immediately back to it allowing the original group assignment to take hold again regardless of the original instance's accepted status.

Conditional show of Accept, Re-assign buttons

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