Hello,
In the standard system, you cannot display alternative routing sequences in a PP/DS runtime object
generated in R/3.You can use the BADI implementation of the CUSLNTRTO_ADDIN BAdI described in this note to display alternative routing sequences in alternative modes.
If the R/3 routing contains a parallel sequence, the transfer to APO has operations appearing in the source of supply in SAP APO (PPM, PDS) that are from the parallel sequence, in addition to the operations triggered by the master sequence operations. The parallelism is mapped using relationships.
please refer SAP note 507025 - Examples of customer enhancements/437400 - Alternative and parallel sequences in APO integration.
Regards
Ashutosh