Synchronizing a Recipe with a Manufacturing BOM 
You can transfer data from an alternative recipe to a manufacturing bill of material (MBOM) with Guided Structure Synchronization (GSS) (see Guided Structure Synchronization (PLM-WUI-GSS)).
The MBOM contains the material assigned to the primary output of the recipe as BOM header, and the materials assigned to the recipe items as items.
The system creates a change state for the MBOM for every recipe version during synchronization.
You can create a new MBOM or, if you have already executed synchronization, update the existing MBOM with the changed recipe data.
Prerequisites
To be able to use GSS for recipes, the following prerequisites must be met:
You have edited the general Customizing for GSS under
Logistics General 
Product Lifecycle Management (PLM) PLM Web User Interface PLM Web Applications Guided Structure Synchronization 
and the section Settings for Synchronization Recipe to BOM.In particular, you have determined here which explosion scope GSS is to use when exploding recipes (see Explosion).
At least one recipe version with a status that is ready for manufacturing (see Status Schemes for Recipes) exists and has not yet been synchronized.
Caution
Depending on the materials or on the MBOM, further prerequisites may be necessary. If the prerequisites are not met, the Reconciliation Workbench issues corresponding error messages and conflicts after the synchronization.
Features
Synchronization Unit
The alternative recipe, together with the assigned MBOM, forms a synchronization unit. The synchronization unit can have the following status:
New, in other words, the alternative recipe was not yet synchronized
Not aligned, in other words, there are new or changed recipe versions that were not yet synchronized
Aligned, in other words, no changes were made since the last synchronization
Note
You can also display and search for synchronization units in the object navigator or in the work center and control center of the PLM Web UI. Note that the system in each case only shows the last recipe version that was synchronized or is pending synchronization, even if further recipe versions may have already been synchronized with this synchronization unit.
Planning Synchronization
When you call the synchronization, the planning screen appears. In the top screen area, you see a table that contains all existing synchronization units for the alternative recipe.
Every synchronization unit contains the following data from the target BOM:
As BOM header material, the material assigned to the primary output of the recipe
Plant
BOM usage
Alternative BOM
In the lower screen area, you see the detail data for the synchronization unit selected in the table.
The detail area contains the following data:
On the General view, you see administrative data for the synchronization unit and the following parameters of the target MBOM:
The quantity of the material that used as base quantity to scale the BOM, in the base unit of measure for the material (changeable)
The system uses the base quantity of the primary output as the default value.
The owning context (ACC) to which the MBOM is to be assigned (optional and changeable)
On the Assignment view, you see which recipe version the system determined as relevant for manufacturing and thus for synchronization.
You assign change numbers to these recipe versions (see Change Number on the Web UI). The system then creates a change state for the changed MBOM components (header or item) for the changed change number when synchronizing.
The system marks the assignment of a change number to the recipe version that was last released and not yet synchronized, as the next assignment to be synchronized.
To determine the structure of the target BOM; the system explodes the recipe after synchronization (see Explosion). On the Synchronization Options view, you determine how the system is to behave during recipe explosion.
You can control the explosion as follows:
Explosion scope
In Customizing, specify an explosion scope that defines which component types the system considers during the explosion.
Alternative items
If the recipe version to be synchronized contains alternative items, you have the following options:
You determine that the system automatically uses the alternative item that is defined as Alternative Used in the formula.
You can then specify further recipes that produce the input items for the recipe. The system then exploseds these recipes as well and creates an MBOM.
NoteThe system only considers the recipes that are specified here. If the system determines an input item during the explosion that exists for a further recipe that is not specified here, the system does not explode this recipe.
The explosion stops at the corresponding item and the MBOM is only created up to this level.
If you specify an alternative recipe whose primary output is either not an input substance for the recipe or for which the system did not find a valid recipe version, the Reconciliation Workbench issues a corresponding message.
End of the note.You determine that you select, in the Reconciliation Workbench during synchronization, which alternative item the system is to use.
If you select a different alternative item, the system calculates the associated quantity in such a way that the item has the same mass per primary output as the alternative item specified in the recipe as the alternative used.
You determine that the system copies all alternative items to the MBOM.
Reconciliation Workbench
After you have started the synchronization from the planning, the Reconciliation Workbench appears. Here, the system displays the target structure that is to be created or updated through synchronization.
If the system determines conflicts, it displays these and you can solve them directly by using predefined actions. The following conflicts can occur here:
Rounding conflict between source quantity and target quantity (information)
Because the recipe can contain values with up to six decimal places, but the MBOM only allows three, deviations caused by rounding may occur during synchronization. In Customizing, you specify as of which deviation the Reconciliation Workbench is to issue a conflict.
New alternative elements exist (information)
The system has determined alternative items. In the Proposal column of the conflict, you can choose which alternative the system is to use for the MBOM.
New elements exist in target (information)
A new change state was created for the MBOM component (header or item) described in the associated conflict description.
Element removed in source (error)
An item existing in the target structure no longer exists in the recipe. You must choose here whether you want to restrict, delete, or keep the item in the MBOM as well. If you keep the item, you must then check the MBOM and adjust the quantities.
Element removed in target (error)
An item existing in the recipe no longer exists in the BOM. Check the recipe.
If there are no more errors, save the target structure. Only then does GSS save the MBOM to the database. If you exit Reconciliation Workbench without saving, the data is lost and you must restart the synchronization.
Activities
To call the synchronization planning, choose the Synchronization Recipe to BOM option in Recipe Editing under You Can Also.
To synchronize a recipe version for the first time, create a new synchronization unit and start the synchronization.
To update an existing MBOM that was created through synchronization, select an existing synchronization unit and start the synchronization.