Validate production flow (class form)

Article
10/09/2018

Applies To: Microsoft Dynamics AX 2012 R3, Microsoft Dynamics AX 2012 R2, Microsoft Dynamics AX 2012 Feature Pack, Microsoft Dynamics AX 2012

Click Production control > Setup > Lean manufacturing > Production flows. On the Versions tab, click Validate.

Use this form to validate a production flow version. The validation performs the following tasks:

Ensures that the production flow activities are configured correctly.
Calculates the activity cycle times for all activities in the production flow version.

You can set up synchronous processing or batch group processing of production flow version validations. Validation warnings and error messages are displayed in an Infolog.

Navigating the form

Key tasks: Set up a production flow

Enter criteria on the General tab

Submit a batch processing job from a form

Validation steps

The validation criteria are described in the following sections.

1. Check production flow activities

All activities in the production flow version must be connected by activity relations.
All picking activities in the production flow version that do not have predecessor activities must be inventory controlled.
All activities in the production flow version that do not have successor activities must be inventory controlled.
The activity relations in the production flow version do not define circular loops.
For the last activity in a production flow version, the unit of measure for the product quantity of an activity time must be convertible to the Per cycle unit of measure of the production flow version.

2. Check relations to other production flows

Feeder production flows must be activated.
For production flow versions that end with a feeder activity, the Average takt time time cannot be greater than the Required takt time time.

3. Calculate takt times, cycle times and throughput settings

The average cycle time of an activity is calculated by applying the Average takt time time of the production flow version to the last activity in the production flow version.
- If the production flow version ends with multiple process activities, the average cycle time is distributed to the upstream activities by using the following formula:
  
  average cycle time (activity) = (takt time (production flow version) X ∑ capacity (all parallel processes)) / capacity (process)
- If the production flow version ends with multiple activities, and one of the end activities is a transfer activity, the average cycle time is distributed to the upstream activities. The following formula is used:
  
  average cycle time (activity) = (takt time (production flow version) X number of parallel processes) / 1
The average cycle time of the last activity is used to calculate the cycle times of all upstream activities by using the following formula:
- average cycle time (activity) = 1 / ∑ cycle time ratio (activity relation) / cycle time (downstream activity)
For process activities that use the production flow model type Throughput, the maximum throughput cycle time of each work cell is calculated by using the following formula:
- maximum throughput cycle time = available time of capacity period / average throughput quantity

If the calculated average cycle time of an activity is less than the calculated maximum throughput cycle time of the related work cell, the work cell capacity that is defined is not sufficient to support the required average cycle time. During activation or validation of the production flow version, a warning is displayed.

4. Check kanban rules

The validation is run for all instances of kanban rules that reference a production flow version with a first activity or a last activity.

The validity dates of a kanban rule and the validity dates of the referenced production flow versions must coincide.
- If the Effective date of a kanban rule precedes the Effective date of the related production flow versions, the Effective date of a kanban rule is updated to the date when both the kanban rule and the production flow version are active.
- If the Expiration date date of a kanban rule succeeds the Expiration date date of the related production flow versions, the Expiration date date of a kanban rule is updated to the first date when both the kanban rule and the production flow version are active.
Any kanban rules of a previous production flow version are updated to use the new Expiration date date and time of the related production flow version.
If the master planning configuration key is active, coverage dimensions are checked for kanban rules that reference specific products.