Manage mBOM items

An mBOM item represents the bill of materials required to construct a part. A part has an mBOM made up of many mBOM items, which dictate the subparts used in the part’s construction. You can think of parts as a tree structure, where the nodes are part objects and the edges are mBOM items. The root of the tree is a part representing a completed assembly. Its mBOM is the parts used in its construction. Each of those parts can have its own mBOM.

mBOM items

mBOM item	Description
id	Unique identifier of the mBOM item object.
parent	The part object whose construction this mBOM item describes.
part	The part object used in the construction of the parent.
quantity	The amount of a specific part needed in construction.
substitutes	List of valid substitutes that can be used in place of the specified part.

mBOM substitutes

An mBOM substitute is a valid alternative that can be used in place of the defined part. Each mBOM item can have many mBOM substitutes, which are subpart replacements for that specific subpart.

mBOM substitute	Description
id	Unique identifier of the mBOM substitute object.
part	The part object that can be substituted for the part in the mBOM item.
mbomItem	The mBOM item for which this object is a valid substitute.

Query an mBOM item

It is often more effective to query the mBOM relation through a part object. List mBOM items with a filter:

query MBOMItems($filters: MBomItemsInputFilters) {
    mbomItems(filters: $filters) {
        edges {
            node {
                id partId parentId quantity
            }
        }
    }
}

Set the filter variables:

{
    "filters": {
        "parentId": {
            "eq": 1
        }
    }
}

Get a single mBOM item by ID:

query GetMBOMItem {
    mbomItem(id: 1) {
        id partId parentId quantity
    }
}

Explode a multi-level mBOM

mbomExplosion returns every descendant line of a root assembly’s mBOM in one request, so you don’t have to walk the tree one request per node.

query MBomExplosion($input: MBomExplosionInput!) {
    mbomExplosion(input: $input) {
        edges {
            node {
                level parentPartId quantity totalQuantity
                mbomItem {
                    id partId parentId
                }
            }
        }
    }
}

Set the variables:

{
    "input": {
        "partId": 1
    }
}

Each node describes one line of the exploded tree:

Field	Description
`level`	Depth in the tree. Lines on the root mBOM are level 1.
`parentPartId`	The part whose assembly this line sits under.
`quantity`	The line’s own quantity, per one unit of its parent assembly.
`totalQuantity`	The quantity rolled up through the tree: the parent’s total multiplied by `quantity`.
`mbomItem`	The underlying mBOM item, so you can select the part, substitutes, and designators.

Lines come back depth-first, so you can rebuild the tree, or write a CSV, straight from the order they arrive in. partId is required. mbomId is optional and sets the version used for the root level only: pass it to explode a specific version, or omit it to use the part’s released mBOM, falling back to its latest when there is no released version. Nested levels always resolve released-else-latest. Passing an mbomId that belongs to a different part returns a validation error.

What the results leave out

Three cases drop lines from the response without returning an error, so check for them before treating a result as a complete tree:

Repeated parts. If a part already appears higher in the same branch, the line for it is left out of the results entirely, rather than returned without its children. A cyclic mBOM terminates instead of looping.
Export-controlled parts. When you aren’t allowed to see an export-controlled part, its line is omitted along with everything below it. If the root assembly itself is export-controlled, the query returns no lines at all, which reads the same as an assembly that has no mBOM.
Very deep trees. Explosion stops after 100 levels. Anything deeper is dropped silently.

Query an mBOM substitute

List mBOM substitutes with a filter:

query MBOMSubstitutes($filters: MBomSubstituteInputFilters) {
    mbomSubstitutes(filters: $filters) {
        edges {
            node {
                id partId parentId mbomItemId
            }
        }
    }
}

Set the filter variables:

{
    "filters": {
        "mbomItemId": {
            "eq": 1
        }
    }
}

Get a single mBOM substitute by ID:

query MBOMSubstitute {
    mbomSubstitute(id: 1) {
        id partId parentId mbomItemId
    }
}

Create an mBOM item

An mBOM item defines which part, and how many of it, a new part needs. parent is the part being built, and part is the part required in the build. The quantity value must be greater than 0. Create the mBOM item with this mutation:

mutation($input: CreateMBomItemInput!){
  createMbomItem(input: $input){
      mbomItem {
          id parentId partId quantity
      }
  }
}

Set the variables:

{
    "input": {
        "parentId": 2,
        "partId": 1,
        "quantity": 3
    }
}

Update an mBOM item

You can update the quantity of an mBOM item and its associated part. Returns the updated mBOM item. Update the mBOM item with this mutation:

mutation UpdateMBomItem($input: UpdateMBomItemInput!) {
  updateMbomItem(input: $input) {
    mbomItem {
      id parentId partId quantity
    }
  }
}

Set the variables:

{
    "input": {
        "etag": "etag1",
        "id": 1,
        "partId": 3,
        "quantity": 5
    }
}

Create mBOM substitutes

Create a valid substitution for a specific part within an mBOM. Any parts listed with mBOM substitutes do not raise a validation error if they are attached to an aBOM instead of the part specified in the original mBOM item. Create the mBOM substitutes with this mutation:

  mutation CreateMbomSubstitutes($input:
                                 [CreateMBomSubstituteInput]!){
    createMbomSubstitutes(input: $input){
      mbomSubstitutes {
        id parentId partId mbomItemId
      }
    }
  }

Set the variables:

{
    "input": [
        { "partId": 3, "parentId": 2, "mbomItemId": 1 },
        { "partId": 4, "parentId": 2, "mbomItemId": 1 }
    ]
}

Delete an mBOM item

You can delete an mBOM item unless it has already been used in the construction of an aBOM. Returns the ID of the deleted mBOM item. Delete the mBOM item with this mutation:

mutation DeleteMBomItem($id: ID!, $etag: String!){
    deleteMbomItem(id: $id, etag: $etag){
        id
    }
}

Set the variables:

{
    "id": 1,
    "etag": "etag1"
}

Delete an mBOM substitute

Delete the mBOM substitute with this mutation:

mutation DeleteMBomSubstitute($id: ID!, $etag: String!){
    deleteMbomSubstitute(id: $id, etag: $etag){
        id
    }
}

Set the variables:

{
    "id": 1,
    "etag": "etag1"
}

Getting Started

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API

mBOM items

mBOM substitutes

Query an mBOM item

Explode a multi-level mBOM

What the results leave out

Query an mBOM substitute

Create an mBOM item

Update an mBOM item

Create mBOM substitutes

Delete an mBOM item

Delete an mBOM substitute

​mBOM items

​mBOM substitutes

​Query an mBOM item

​Explode a multi-level mBOM

​What the results leave out

​Query an mBOM substitute

​Create an mBOM item

​Update an mBOM item

​Create mBOM substitutes

​Delete an mBOM item

​Delete an mBOM substitute

​Related

mBOM items

mBOM substitutes

Query an mBOM item

Explode a multi-level mBOM

What the results leave out

Query an mBOM substitute

Create an mBOM item

Update an mBOM item

Create mBOM substitutes

Delete an mBOM item

Delete an mBOM substitute

Related