A line hierarchy in repetitive manufacturing represents the structure of a production line that consists of multiple work centers. A line hierarchy is a master data object that defines the sequence and the relationship of the work centers that are involved in producing a material. A line hierarchy can be split into different levels, such as line segments, processing stations, or takt areas, to reflect the complexity and the variability of the production line. A line hierarchy can be used for planning and scheduling operations, controlling material flow, and monitoring production performance12.
The other options are not correct for the following reasons:
A production line with prioritized work centers (B): This is not correct. A line hierarchy does not define the priority of the work centers, but the order and the dependency of the work centers. The priority of the work centers can be determined by other factors, such as the capacity availability, the production rate, or the scheduling parameters.
A production line with a parallel sequence in the routing ©: This is not correct. A line hierarchy does not represent the parallel sequence in the routing, but the linear sequence of the work centers. A parallel sequence in the routing means that two or more operations can be performed simultaneously on different work centers for the same material. A parallel sequence in the routing can be modeled by using alternative sequences or parallel sequences in the line hierarchy3.
A production line with an alternative sequence in the routing (D): This is not correct. A line hierarchy does not represent the alternative sequence in the routing, but the main sequence of the work centers. An alternative sequence in the routing means that there are different options for performing an operation on different work centers for the samematerial. An alternative sequence in the routing can be modeled by using alternative sequences or parallel sequences in the line hierarchy3.
References:https://help.sap.com/docs/SAP_S4HANA_ON-PREMISE/48b24fbadbee4e0b9dae0e2b72762e68/db8151ba8ca14106bf037a1546cde6a9.html
https://help.sap.com/docs/SAP_S4HANA_ON-PREMISE/f899ce30af9044299d573ea30b533f1c/9231f9504a62eb5ee10000000a44538d.html
