How to Replace an Approver in Process Controlled Workflow SRM 7.0?

It is not possible to remove or replace a system determined approver while creating an SRM document e.g. shopping cart.

The 'Remove Approver' button is not enabled for the workflow steps through process controlled workflow.

Reproducing the Issue

1. Create an SRM document e.g. shopping cart, via the SRM browser.
2. While creating the cart, go to the item detail screen.
3. Select the 'Approval Process Overview' tab.
4. Note the following system behaviour for the approvers determined by the system :
   The 'Remove Approver' button is greyed out or deactivated.
   There is no 'Change Approver' or 'Replace Approver' button.

Cause
It is not possible to change or remove an approver which is determined by the system. The Process Controlled Workflow is more restrictive in this way than the Application Controlled Workflow. This is the system design and cannot be changed.

Resolution
The system is working as designed. However, as an alternative, the following functionality should be considered :

1. If the approver is not available, then the workitem should be directly forwarded to the substitute approver, if the approver has maintained his substitutes.
2. If you need to forward the workitem of an approver who is not available, you can do so via transaction SWIA from the SRM SAPGUI and then generate a new approval email by running report /SAPSRM/OFFLINEAPPROVALSEND via transaction SE38, if required.