on 04-02-2009 3:16 PM
HI Experts,
I wish to understand what is the difference between Production Process Model & Product Data Structure. Thanks in Advance.
Production version in R/3 corresponds to PPM in APO.
PPM is a Source of supply for procuring a product produced in-house...
whereas with the product structure, the understanding of the components which compose a product as well as their attributes, can be represented. The product structure shows the material, component parts subassemblies and other items in a hierarchical structure that represents the grouping of items on an assembly drawing or the grouping of items that come together at a stage in the manufacturing process.
it is more like a BOM..
karthick
FYI Production version is the Key which determines the various production techniques according to which a material can be manufactured.
The production version determines the following:
the BOM alternative for a BOM explosion
the task list type, the task list group and the task list group counter for allocation to task lists
lot-size restrictions for repetitive manufacturing
karthick
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Hi Prasanna,
I have given below the detailed comparative account of PDS Vs PPM. Please copy and put it in an excel sheet in different columns and then read which is easy to understand.
PDS
1. Production Data Structure (PDS) in APO 3.1 & Run Time Object (RTO) in 4.0 and above versions
2. Master Data Object
3. Useful for scenarios where the compoenent has got different validity periods
4. Used as Master data Basis for Planning in SAP-APO
5. Contains active Master data from iPPE (Integrated Product and Process Engineering) generated from a production version
6. PPDS PDS & SNP PDS can be used as master data for planning
7. Change Management, variant configuration & Phantom assemplies are supported in PDS
8. Sub-contracting in SNP is fully integrated with R/3 is supported in PDS
9. Direct transfer of SNP PDS from R/3 is possible
10.Rapid Planning Matrix can be generated
11. Not possible to maintain PDS directly in APO and can be used only in combination with R/3
12. The transfer of data changes is simpler
13. Not possible to create alternate SNP-PDS in std system for different mode combinations
14. PDS can be automatically generated from two sources ie R/3 and iPPE
PPM:-
1. Production Process Model
2. Master Data Object
3. Cannot be used for scenarios where the component has got different validity period
4. Used as Master data Basis for Planning in SAP-APO
5. Contains active Master data generated from the combination of routing (BoM & receipe) and production versions
6. PPDS PPM & SNP PPM's can be used as master data for planning
7. Not supported by PPM
8. Not supported by PPM
9. Not possible here. SNP PPMs will be generated via PPDS PPMs
10. Not possible
11. PPMs can be directly created in APO and can be modified without R/3 also.
12. Little Complex when compared to PDS
13. Alternate SNP-PPMs can be easily created
14. PPM can be generated automatically generated only from R/3
Regards
R. Senthil Mareeswaran.
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Hi,
Refer the OSS Note: 1079959.
Here is the extreact:
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Functionalities supported by PDS and not PPM
Engineering change management
Differing from the PPM for SNP, the PDS for SNP is transferred directly from ERP and is not generated from the PP/DS-PDS.
Subcontracting in SNP is fully integrated with ERP
Rapid Planning Matrix supports only PDS and not PPM (in combination with ERP-DIMP).
Class nodes are supported in PDS but not in PPM
Variant tables are supported in PDS and not in PPM
Variant functions are supported in PDS and not in PPM
Model-Mix-Planning (MMP) is supported in PDS and not in PPM.
NET indicator is supported for PDS in 5.0 but not for PPM
Major Limitations of the PDS to the PPM
Product flows are not supported in PDS.
Suboperation and secondary resource are not supported in SNP PDS because SNP PDS considers only linear chains of activities.
Alternative modes for the PDS can either be created using alternative sequences or resource classification but not both.
Time-dependent parameter (can be transferred to the PDS using a BADI).
Overrule the synchronization setting of the resource on activity level
Cost fields are supported in PPM and not in PDS (however they can be implemented via a BADI).
SNP Bucket consumption fields with PP/DS-order are supported in PPM and not in PDS (however they can be implemented via a BADI)
At BOM transfer components that have been marked as provided parts (field BEIKZ) are only filtered if the main product has special procurement key (field SOBLS) 30 (subcontracting) assigned. Please also refer to note 1255626.
Differences in Modeling
Phantoms are transferred explicitly (in difference to the PPM where the BOM of the phantom is already exploded on the ERP-side)
If subcontracting in PP/DS is modeled like in ERP (i.e. the production takes place in the plant) it is Sufficient to transfer the BOM to APO . In this case no production version is required on ERP-side.
This is however not supported by SNP.
For Multi-level ATP the transfer of the BOM is sufficient as well. In this case it is possible to use the goods receipt time as a workaround for the order duration.
For the generation of a SNP-PPM from a PP/DS-PPM it is possible to exclude components and Operations by setting the flag #not SNP relevant' in the product master respectively. In the resource master this can be done for SNP-PDS via a BADI (/SAPAPO/CURTO_SNP method CIF_IMPORT)
For the transfer of alternative sequences to the PDS the BADI CUSLNTRTO_ADDIN has to be implemented (example coding in note 357178). For the PPM the User-Exit CIFPPM01 had to be implemented according to note 217210.
Support strategy
Further developments will be done only in PDS . However SAP will continue to support PPM .
============================================================================
Regards,
Siva
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