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Published in:
2009 | OriginalPaper | Chapter
Modelling of Special Production Conditions
Author : Jörg Thomas Dickersbach, Dr
Published in: Supply Chain Management with SAP APO¿
Publisher: Springer Berlin Heidelberg
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Alternative resources can be modelled either as alternative modes within one PPM resp. PDS or as alternative PPM resp. PDS. Since the selection of the plan takes place during production planning and not in scheduling, changes of the plan in scheduling are not supported by the scheduling applications but have to be performed interactively. Therefore alternative resources should be modelled as alternative modes if the resource selection is supposed to take place during scheduling.
If alternative resources are modelled using alternative PPM resp. PDS (i.e. alternative production versions), the possibilities to change the resources in PP/DS are limited. The advantages and disadvantages resp. the properties of the different ways of modelling alternative resources – either using alternative modes within one plan or using alternative plans with only one mode – are listed in table 19.1.