Budget Approval With/Without Workflow 
Use
The budget control system (BCS) only works with a predefined budget approval procedure. This means that a processor can only enter a request for budget in the system in which the request can be approved by a superior employee.
You can control the approval procedure using a workflow connection. Budget requests and budget approvals are automatically distributed by the mail system. You can specify whether the approval procedure should be controlled using workflow when you create an entry document.
Prerequisites
You must have activated the corresponding workflow template for a workflow-supported approval procedure.
You do this in the Customizing of Funds Management, under
Workflow
Role Definition
Role Definition: Preposted Budget in the Budget Control System 
.
You have also defined an entry document type for a workflow-supported approval procedure.
You define this in the Customizing of Funds Management, under
Budget Control System (BCS)
BCS Budgeting
Budget Entry
Budget Entry Documents
Document Definition
Define Document Types
.
Features
SAP delivers the workflow templates WS12300025 and WS12300026 ,which you can use to activate the settings of the workflow-supported approval procedure.
The two workflow templates are different in that WS12300026 allows you to change the budget request if it is rejected. The rejected budget entry document can be used here as a template for creating a new request.
The functions of the generic object service are available in the budgeting workbench: You open the
Object Service Toolbox
by selecting the pushbutton
( )
(
Services for Object
) on the title line of the BWB. Now you can display an overview of all budget entry documents that must undergo an approval procedure. If the budget to be approved is not processed by a workflow, the person responsible for the budget can call up the entry document to be approved using the Object Service Toolbox.