Final Exam Flashcards
A few hallmarks of an APS system usually include:
- fewer internal users than ERP systems.
- the use of memory resident models in addition to traditional data base management systems.
- advanced planning & scheduling functionality.
- advanced optimization algorithms such as linear programming and other heuristics.
- planning at a finer time increment.
- ability to do rapid what-if simulation.
- advanced problem notification.
Major APS software providers are:
- SAP
- i2 Technologies
- Manugistics (now JDA)
- Oracle (up and coming)
- plus others.
The SAP APO application is SAP’s version of
Advanced Planning & Scheduling
APO is bundled with several other advanced planning applications into mySAP SCM 5.0.
- Advanced Planning & Optimization (APO)
- Forecasting and Replenishment–retail.
- Inventory Collaboration Hub
- Event Manager
- Extended Warehouse Management
(^^all of those 5 things have one thing in common—> all used for supply chain.
APO is all about
planning.
APO Demand Planning (DP) is used
to create a forecast of market demand for your company’s products.
APO DP allows you to take into consideration the many different causal factors that affect demand.
DP Contains a large library of statistical forecasting models.
-customers may also develop unique forecasting models using a powerful macro tool.
Forecasts created by APO DP may be released to
APO Supply Network Planning or passed to R/3 for MRP planning.
APO Supply Network Planning (SNP) integrates
purchasing, manufacturing, distribution, and transportation so that a comprehensive tactical planning and sourcing decisions can be simulated and implemented on the basis of a single, global consistent model.
Starting from a demand plan, Supply Network Planning creates a
medium-term, rough-cut plan for fulfilling the estimated sales volumes.
Supply Network Planning uses advanced optimization techniques, based on
constraints and penalties, to plan product flow along the supply chain.
APO Production Planning/Detail Scheduling (PP/DS) is intended to be a
short-term (1-6 weeks), detailed planning and scheduling tool.
The PP portion of PP/DS is capable of creating
finite supply chain plans taking capacities into consideration.
The DS portion of PP/DS is capable of creating
optimized scheduling sequences.
PP/DS accomplishes its primary mission by
using various advanced heuristic and linear programming algorithms.
APO Global Available to Promise (GATP) is
an advanced order promising tool.
GATP extends the Available-To-Promise capability currently in SAP R/3 to include:
- Multiple Plant Planning
- Simulation of orders (Capable-To-Promise)
- Rule-based order promising.
APO Transportation Planning/Vehicle Scheduling (TP/VS) is intended to
optimize the planning and scheduling inbound and outbound freight.
The Transportation Planning portion of TP/VS enables you
to make optimal use of the available capacity of trucks, trains, ships, and airplanes.
The Vehicle Scheduling component of TP/VS will
optimize the delivery routes.
TP/VS utilized
advanced linear programming algorithms to accomplish its mission.
The APO Alert Monitor is an
advanced monitoring system to detect supply chain problems at the earliest possible time.
The APO Alert Monitor is capable of
operating within all the APO sub-modules (DP, SNP, PPS/DS, TP/VS).
APO Alert conditions may be
customized by company or individual user.
The portion of the APO Architecture where most data and calculations are performed is called
Live Cache.
The purpose of the BW (Business Warehouse) is
to store historical sales data to forecast.
The APO Modules where forecasting is done is
Demand Planning.
The APO Module used for Advanced Order Promising is called
Global ATP
The APO module used for advanced problem notification is called
Alert Monitor.
Characteristics usually in an APO System include:
- Fewer internal users than ERP Systems (fewer users).
- The use of memory resident models in addition to traditional data base management systems.
- Advanced planing & scheduling functionality.
- Advanced optimization algorithms such as linear programming and other heuristics (advanced mathematical techniques).
- Planning at a finer time increment.
- Ability to do rapid what-if simulations (rapid what-if simulations).
- Advanced problem notification.
The APO Core Interface Framework (CIF) is used for
the data exchange between SAP APO and SAP R/3 Systems.
The CIF will transfer both
master data and transaction data from SAP R/3 to SAP APO and also from SAP APO to SAP R/3.
Data passing between SAP R/3 and SAP APO may be
either real-timed or batched.
The IT Technology used for the interface is the
Remote Function Call (RFC).
The passing of data is enabled by
the creation and maintenance of Integration Models.
All Integration Models are defined in
SAP R/3 (host system)
Multiple Integration models will be used in connecting SAP R/3 to APO. Each model will transfer different data.
Example– an integration model will be defined for transferring the organizational data elements (plant, storage locations, etc) to APO.
Integration models are always defined in the
SAP R/3 system.
Various definitions muse be made in configuration in
both R/3 and APO.
R/3 and APO contain various tools for
monitoring and handling integration errors.
Master data that was originated in SAP R/3 is
maintained in R/3.
Master data that is unique to APO is
maintained in APO.
All Master Data transferred using the CIF is
automatically assigned to model 000 (Active model) in live cache.
-Therefore models in APO contain master data.
Since APO may be used for simulation or what-if planning,
other models may be created that contain master data different from the model 000 (Active model).
All transaction data that is transferred to APO through the CIF is
stored in Version 000 (Active Version).
-Examples of transaction data would be forecasts, sales orders, etc.
Since APO may be used for simulation or what-if purposes,
other versions may be created that contain transaction data different from Version 000 (active version).
All transaction data transferring from APO to R/3 must be
stored in Version 000.
The key ingredient to passing data through the Core Interface is
Integration Models.
The Core Interface can connect
multiple R/3 systems to a single APO server.
Master data that originated in R/3 and passed to APO through the Core Interface should be maintained in
R/3.
When Transaction data passed through the Core Interface it is stored in which area of Live Cache?
Version 000.
Master data is stored in
Models.
Transaction data is stored in
Versions.
Integration models are always made in the
ERP (R/3).
The Master Data Objects in SAP APO have different names from their SAP R/3 counterparts. For example, the material master in R/3 is named
Product Master in APO.
Many of the APO master data fields originate in R/3 and are
transferred through the Core Interface (CIF).
APO has many master data fields that do not have counterparts in R/3. These master data fields are
needed to perform the APS functionality that does not exist in R/3.
APO also has one master data objects that
does not have a R/3 counterpart.
Master data is maintained in its
system of origin.
R/3 fields in R/3 and APO fields in APO.
The Location Master is a common master data object used to house the following R/3 objects:
- Plant
- Customer
- Supplier
- Plus others.
The location master is crucial to supply chain management because
it is the building block for so many other relationships.
The Location Type will
distinguish between the different location masters.
The APO Transportation Lane (TL) does
NOT have a R/3 counterpart.
The TL defines all
valid transportation methods between two locations.
TLs may be defined for
all products moved between two locations or may be specific by product.
If no TL exists between two locations then
one location cannot be a source of supply to the other.
The TL may define
multiple valid transportation means (truck, rail, air) along with the transportation time and cost for each.
APO sourcing algorithms will examine the
TL for cost and time data to determine the optimum method.
The Quota Arrangement determines the
source and quantity demanded when several possible suppliers (i.e. locations) are available.
Quota arrangements exist in R/3 but
are NOT used in APO.
Quota arrangements may be defined for all products sourced from a location or
it may be product specific.
Product splits may be defined as:
- Fixed split.
- Determined by a heuristic algorithm.
- Determined optimally and then remain fixed.
If there is only 1 source of supply than
no quota arrangement is needed.
The APO Product Master is the
direct equivalent of the R/3 Material Master.
Most of the data from the MRP data views will
pass through the Core Interface to create the Product Master.
The Product Master will also contain data elements that do not exist in R/3. A few examples are:
-Penalty Costs–these reflect the relative cost of missing an order due date.
-Storage Costs–the relative cost of storing a product.
-Good receipt/issue costs.
~These costs are used to influence the Optimizer program in Supply Network Planning.
The APO Resource Master is the direct equivalent of the
R/3 Work Center (discrete) or Resource (process).
The APO Resource Master is considerably more
flexible than its R/3 counterparts.
For example, in R/3 a work center may have multiple capacities (labor and machine).
When used in a APO environment,
APO Resource Master
each capacity will create a separate and distinct resource. This allows for capacity planning for both resources.
Finally, the APO Resource may be used to
model transportation and material handling resources.
Resources in APO may be
Model/Version dependent for what-if simulation purposes.
The APO Production Process Model (PPM) is a
complicated and sophisticated object that combines the major components of the R/3 BOM and Routing.
There the PPM will contain
all the materials required and all the process steps, resources and processing times.
Additionally the PPM may also contain production cost data. This allows for PPMs to be created for various locations (plants) with different production costs.
A linear programming sourcing model may then determine the optimum quantity to source from each location.
Two Types of PPMs
PPM=Production Process Model
- PP/DS Plan
- SNP Plan
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The APO Procurement Relationship object is the direct equivalent of the R/3 Purchasing Information Record, Contract or Scheduling Agreement.
Since all of these R/3 objects define a valid relationship between a supplier and a trading partner the Core Interface will automatically create a Transportation Lane.
The APO master data object that is required before a valid source of supply can exist is the
Transportation Lane.
The APO master data object that does not have a direct equivalent in R/3 is
Transportation Lane.
The APO master data object that combines the R/3 BOM and routing together is the
Production Process Model (PPM).
A purchasing Information Record in R/3 that passes through the Core Interface will automatically create what APO master data object?
Procurement Relationship and Transportation Lane.
A forecast is a
prediction of a variable of interest for a future time period.
The three absolutes of forecasting are:
- Forecasts are always wrong.
- Forecasts are more accurate in groups rather than individuals.
- Forecasts are more accurate in the near term.