ECR / ECO 

You can control the progress of changes with an engineering change request (ECR) / engineering change order (ECO).

An engineering change request is a change master record with reference to a change type. Since processing change objects with an ECR/ECO enables you to control changes in a more precise way, you cannot create a change request with the Change Leader (Leading change master record) function.

The following graphic shows some additional functions that you can use when you assign a change type to the change master record.

The following table shows a comparison between a simple change master record and an ECR / ECO.

Comparison of Change Master Record with ECR / ECO

Data to be maintained	Change Master Record	ECR / ECO
Change type	-	X
Internal system status	-	X
User status	X	X
Object management records	X	X
Generating object management records	X	Only when creating an object
Entering valid-from date	immediately	Until ECR becomes ECO
Editing change objects	immediately	ECR must be converted to ECO
Digital signature	-	X