Issue to schedule Migration Jobs

Hello gents,

I’m stuck in IFS 23R1SU6 to schedule Migration Jobs

I have this message : 

ORA-20105: Assert.IS_PKG_METHOD: "Intface_Util_API." is non existing package method.

when trying with those API :

Intface_Header_API.Start_Migration_Batch_

or Intface_Header_API.Start_Batch_

Any idea ?

Thanks