Unable to select the value to map in flow designer

[ArpitaVK]

I am working on the flow designer that triggers the Staff change LCE from the Workday payload received. The payload includes New Manager ID and Old Manager ID(both are string inputs to the flow).

There is a lookup record for the New Manager ID and the Old Manager ID on the User table. For Lookup on New Manager ID, I am able to map that value to get the New Manager Name and Title.

But for the Old Manager ID lookup, I am unable to select its reference to map. It looks like the selection has been disabled. 

Can someone help me with this issue?

[Ankur Bawiskar]

@ArpitaVK 

could be a platform limitation.

Did you check ServiceNow docs?

[ArpitaVK]

@Ankur Bawiskar Thanks for the reply!

Can you please let us know which ServiceNow we should refer to? Also, what could be the solution to resolve this issue?

[Ankur Bawiskar]

@ArpitaVK 

is this a custom flow action or OOTB flow action which you are using?

[ArpitaVK]

@Ankur Bawiskar, I am using the OOTB flow action.