Vary Type and Rate of Consumption for Components, Materials, and Resources

Some resources need a fixed setup time in addition to a cycle time for each operation to create the order line's quantity. A manufacturing operation might also consume more of the material or component's quantity to provide test samples, allow for scrap during calibration or setup, or to support other, one time activities.

To meet the demand from this fixed and variable consumption, you can specify more than one consumption rate for resource capacity, components, and materials in your bill of resources.

Use this feature when:

You need to have more than one instance of the same component or resource but you put them into effect on different dates and with different rates of consumption.
You have critical components or resources in a subassembly that isn't critical, and the dates and rates of consumption for those components or resources are different from the subassembly's dates and consumption.

Try It

Do the same set up that you do in the Use Different Components, Materials, and Resources Depending on Start and End Dates topic, except now you can use more than once instance of each component or resource, where each instance can have different effective dates, quantities, basis type, and so on.
Global Order Promising will use the bill of resources to determine the quantities for the components and resources that it needs to meet demand.

Specify the Basis Type attribute for each component or resource in the work definition.

Set Basis Type To	And The Required Usage Will
Fixed	Remain constant, regardless of the order line's quantity.
Variable	Vary, depending on the order line's quantity.

Guidelines

Consider this behavior when you use this feature:

If your bill of resources has more than one instance of a component or resource, and if those instances have different date ranges and basis types, then Promising will consider the basis type when it determines the quantities that it needs to fulfill the component or resource according to that component or resource's start and end dates.
If Promising must split the order line to meet the requested date, then it will consume the fixed quantity for each split.
If the Create Bills of Resources scheduled process encounters more than one work definition for a component or resource, and if that component or resource has the same effective dates, quantity, and basis type, then the scheduled process will combine them into a single bill of resources.

If a parent subassembly has a child subassembly that isn't critical, and if the child contains a critical component, then the scheduled process will link the child to the parent, then set the quantity in the bill of materials differently depending on the component's basis type:

Basis Type	Description
Fixed	Roll up the child's quantity to the parent.
Variable	Multiply the component's quantity with the child subassembly's quantity, then roll up the result to the parent.

Set the Find Number Attribute

You can use the Find Number attribute on the item's structure to uniquely distinguish between more than one instance of a component. For details about the find number, see View Structure Details.

Introduction to the Examples

Assume your item has this hierarchy:

M1
  AS301
    CM201
    CM202
  R3
  SB111
    CM364
    CM365
  R4

Same Component, Different Quantity or Basis

Assume you have this work definition:

Row	Assembly	Component or Resource	Operation Sequence	Quantity	Basis	Effective Dates
1	AS301	SB111	10	1	Variable	January 1
2	-	CM201	10	1	Variable	January 1
3	-	CM202	20	2	Fixed	May 1 through August 31
4	-	CM202	30	1	Variable	January 1
5	-	CM202	40	4	Fixed	January 1
6	-	R3	10	0.5	Variable	January 1
7	SB111	CM364	10	1	Variable	January 1
8	-	CM365	10	1	Variable	January 1
9	-	R4	10	0.5	Variable	January 1

Note

Assume all components and resources are critical.
There's more than one instance of the CM202 component, and each instance has different operations, quantities, and bases.
For brevity, if there's no end date, then the Effective Dates column in the table includes only the start date.
We're using “rows” here only to help describe the example. There's no such row in your actual work definition or bill of resources.

Assume you run the Create Bills of Resources scheduled process on January 1. It will create this bill of resources:

Row	Assembly	Component or Resource	Quantity	Basis	Effective Dates
1	AS301	SB111	1	Variable	January 1
2	-	CM201	1	Variable	January 1
3	-	CM202	2	Fixed	May 1 through August 31
4	-	CM202	1	Variable	January 1
5	-	CM202	4	Fixed	January 1
6	-	R3	0.5	Variable	January 1
7	SB111	CM364	1	Variable	January 1
8	-	CM365	1	Variable	January 1
9	-	R4	0.5	Variable	January 1

For brevity, let's focus on how Promising promises the CM202. If CM202's demand date happens on May 1 through August 31, then Promising will consume a total quantity of 7:

Quantity of 2 from row 3, plus
Quantity of 1 from row 4, plus
Quantity of 4 from row 5

Assume CM202's demand date happens January 1 through April 30, or after August 31, which is outside of row 3's effective dates. Promising will ignore row 3 and will consume a total quantity of 5:

Quantity of 1 from row 4, plus
Quantity of 4 from row 5

This example will you give you a work definition with this hierarchy after you finish collecting data:

Note

The R3 resource will do the OP10 operation to build a quantity of 1 SB111 subassembly, and a quantity of 1 CM202 component.
If demand happens from May 1 to August 31, then the OP20 operation will add a quantity of 2 CM202 components to the AS301 assembly.
If demand happens on or after January 1, then the OP30 operation will add a quantity of 1 CM202 component to the AS301 assembly.
If demand happens on or after January 1, then the OP40 operation will add a quantity of 4 CM202 components to the AS301 assembly.

This sequence builds the AS301 assembly. Promising will use a similar sequence to specify promising for the SB111.

Note that an operation doesn't have to have a resource that does a physical action. A resource could be a tool or machine, the operation could be a curing or cool down process, and so on. For example, your final assembly is a ceramic pot, the resource is a wood-fired kiln, and the operation is the 24 hour cool down process for the kiln.

Same Resource, Different Quantity or Basis

Assume you create this work definition.

Row	Assembly	Component or Resource	Operation Sequence	Quantity	Basis	Effective Dates
1	AS301	SB111	10	1	Variable	January 1
2	-	CM201	10	1	Variable	January 1
3	-	CM202	30	1	Variable	January 1
4	-	R3	10	0.5	Variable	January 1
5	SB111	CM364	10	1	Variable	January 1
6	-	CM365	10	1	Variable	January 1
7	-	R4	10	0.5	Fixed	January 1
8	-	R4	10	.75	Variable	January 1

The work definition has more than one instance of the R4 resource. Each instance has the same operation but different quantities and bases.

Assume you run the Create Bills of Resources scheduled process on January 1. It will create this bill of resources:

Row	Assembly	Component or Resource	Quantity	Basis	Effective Dates
1	AS301	SB111	1	Variable	January 1
2	-	CM201	1	Variable	January 1
3	-	CM202	1	Variable	January 1
4	-	R3	0.5	Variable	January 1
5	SB111	CM364	1	Variable	January 1
6	-	CM365	1	Variable	January 1
7	-	R4	0.5	Fixed	January 1
8	-	R4	0.75	Variable	January 1

For brevity, let's focus on how Promising promises the R4. Both instances of the R4 go into effect on January 1 with no end date, so Promising will always consume a total quantity of 1.25:

Quantity of 0.5 from row 7, plus
Quantity of 0.75 from row 8

This example will you give you a work definition with this hierarchy after you finish collecting data:

Note

- R4 will take 0.5 hours to complete the OP10 operation.
- R4 will take 0.75 hours to complete the OP10 operation.