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Integration of Production Process Models 
In this section, you find information about integrating data between SAP R/3 and the production process model (PPM) of SAP Advanced Planning and Optimization (SAP APO).
A production version must be created in SAP R/3 to enable the transfer of master data to the PPM in SAP APO.
If no data was sent to SAP APO despite a PPM being selected for the generation of the integration model, you should check the following:
· There must be a valid plan in the production version for Detailed Scheduling. The bill of material (BOM) must be valid until the key date (in case the validity period of the production version changes).
· At least one operation must be assigned to a work center because only assigned operations are transferred to SAP APO.
· In the work center, formulas for scheduling and capacity must be maintained for operations, otherwise operations are not transferred to SAP APO.
· The standard values must be maintained in the operation detail. If times have not been maintained for operations/phases, they are not transferred to SAP APO.
· You must ensure that the scheduling indicator is set in the control key because only those operations relevant to scheduling are transferred.
· The leading material must be contained in an active integration model, otherwise the PPM is not transferred to SAP APO.
· The components of the BOM must be contained in an active integration model, otherwise the components are not transferred to SAP APO.
