Routing types and routing creation in SAP PP

What is a routing?

  • A routing is a type of master data
  • It describes how certain inputs (e.g. material) are transformed into a certain output (e.g. material), through defined operations
  • A routing also defines the work centers and PRTs (production resources and tools) required for conducting the defined sequence of operations
  • In addition, the routing also comprises standard values and times for the process steps defined in the routing

Steps for creating a routing

  • Identify initial work piece / item
  • Define sequence of operations
  • Assigning machine required for operations
  • Assigning PRTs (production resources and tools)

Approaches to routing creation 

Regenerative planning:

Non-standardized work pieces.

No re-use of routings.
Adaptive planning:

Partly standardized work pieces.

Addition, deletion & replacement of operations.
Variant planning:

Component families.

Variation of parameters.
Repetitive planning:

Standardized product range.

Complete re-use of routings.

Routing types 

Routing:

Describes production of a material.

Various routings for same material, e.g. for lot size ranges.

Can copy reference operation sets to minimize maintenance/creation effort.

Reference operation set:
Sequence of operation frequently repeated in a production cycle.

Can be referred to or copied when needed.

Works as a template in routings.

A change in the reference operation set adjusts all routings referencing it.
Rate routing:

Constant reference time and variable production quantity. 

Describes quantity to produce within given time period.

Production rates are maintained for each operation in the routing.
Reference rate routing:

A template for rate routings.

Similar to reference operation sets.




Routing vs. rate routing 

ROUTINGRATE ROUTING
Used for discrete manufacturing.

Has set-up times.

Times (e.g. machine time) are specified on fix, defined base quantity.

Used for order based costing.

Created with TC CA01.
Used for repetitive manufacturing.

Does not have set-up times.

Times (e.g. machine time) fixed and the quantities can be specified.

This results in ratesUsed for period based costing.

Created with TC CA21.

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