Additional ATP Functions in Service Parts
Management 
Use
If you activate the system configuration for service parts management, additional functions for availability check using SAP APO are available.
Prerequisites
In addition to CRM Enterprise, the following minimum system requirements apply:
· SAP SCM 5.0
· SAP ECC 6.0
The system configuration for service parts management is active. You active this configuration in the Implementation Guide for SAP Customer Relationship Management under Transactions ® Basic Settings ® Activate System Configuration for Service Parts Management.
For further
information on the system configuration for service parts management, see 
Additional
Functions in Service Parts Management.
You must carry out
planning in
SAP APO; planning in SAP
ECC is not supported.
Features
The following functions are additionally available:
·
Controlling ATP Check
in the Sales Order
Using these functions, you can manually control in the sales order how SAP APO
carries out the availability check.