Hi @Anonymous ,
Do you mean that you have 3 entities that have no relationship, you want to save them to the same collection and add a column record its entity names?
If so,I've made a similar test for your reference:
Since these three entities have different column names, I'm afraid you need to firstly create a table will all fields'name that these three entities have. Or else, you can not save them together.
Try this formula:
ClearCollect(newentity,{field1:"",field2:"",field3:"",.....,entityname:""});
Collect(newentity,AddColumns(entity1,"entityname","entity1"),
AddColumns(entity2,"entityname","entity2"),
AddColumns(entity3,"entityname","entity3")
)
Please note that you need to pay attention to the data type in step1. "" represent text type. If the field is not text type, then you could not update successfully in step2.
If it is a choice type, you need to use fieldname:{Value:""} at step1.
If it is datetime type, you need to use DateTimeValue("") at step1.
Best regards,