Incorporated M-parts in manufacturing order that you have chosen not to stock update (via a system setting) can be ignored by the run netting.You will find a general description of how to manage lists in MONITOR in the chapter Managing Lists in the System under General in the MONITOR Basics guide.
Why Use This Procedure?
Run Netting is used to perform requirements planning based on the customer order backlog, as well as any existing sales forecasts. The list in the procedure automatically generates manufacturing and purchase order suggestions for several parts at a time, throughout all the structure levels.
The parts that are given order suggestions are those where shortages will occur due to reservations originating from customer orders or material requirements from manufacturing orders.
These suggestions can later be used to generate actual manufacturing and purchase orders in the Manufacturing Order Suggestion and Purchase Order Suggestion procedures.
The list contains information about rescheduling possibilities, if any. Before you release the suggestions, you should verify them per row under the Order window tab in the Part Info procedure.
If you perform requirements planning based on manufacturing forecasts, you should use the Run Netting Manufacturing Forecast procedure instead.
What Is Netting?
The Run Netting procedure functions just like the Run Netting Manufacturing Forecast procedure, as an automated process consisting of several steps. All structure parts are calculated using the maximum number of levels indicated under the Create tab, which means that the program performs an explosion of the parts.
First you perform a requirement calculation at the top level (level 0) for the part assortment in your list. Any customer orders that have caused shortages for these parts, are then covered by creating manufacturing order suggestions. After that, it will calculate the requirement for the next level (level 1). Any material requirements that have caused possible shortages for that level of M-parts and S-parts, will be covered by new manufacturing order suggestions; while P-part shortages are covered by purchase order suggestions. After that, the next level is requirement calculated (level 2) and so on, all the way down to the lowest level.
Compare this with applying the Requirement Calculation procedure, which usually first performs the requirement calculation and generates order suggestions for M-parts, S-parts and P-parts in one step, and finally for the P-parts in another separate step.
Incorporated M-parts in manufacturing order that you have chosen not to stock update (via a system setting) can be ignored by the run netting.
In the Requirement Calculation procedure you can see information regarding which parts and for which requirements the system has made order suggestions or rescheduling suggestions. In the Run Netting procedure you will only see a summary of how many suggestions have been placed, and how long the run took in a separate window and a text log. Also see the Printout Samples.
Please note that any shortages in past time in the system, can generate suggestions that will also be in past time. However, these suggestions can be moved ahead in time by default, if you deactivate the setting Create order suggestions in past time? under Requirements Planning under the Inventory tab in the Settings procedure.
Please note that if you do not allow suggestions in past time, the following will apply: The order period ("today") will be displayed in red font if the suggestion was supposed to have been created for an order in past time.
In the Requirement Calculation procedure, the order period ("today") will be displayed in red font if the suggestion was supposed to have been created for an order in past time.
Use the tab called Order Window in the Part Info procedure to see additional information about order suggestions and rescheduling suggestions. Also see the Requirement Calculation procedure, to see how the equivalent information is presented there.
A netting run may take quite some time if there are large structures with many levels, and if you have selected a large range of parts in your list. Normally, the Run Netting is therefore scheduled to be run automatically on the database server during the night or at other times when few users are logged on to MONITOR. A log file is created per company called NETTO_[company no].LOG, where you can see information about the netting runs. The log file is created in the path %TEMP% in Windows for the Windows user account which is logged on to run the netting.
in the flow chart you will find the proper work flow in the Run Netting procedure.
Make sure that the parts with the largest structures (the most levels) are contained at the beginning of the range of parts that you will be including in your Netting run, as this will minimize the time used for the lowest-level explosion.
If a part is included in itself, that is if there are incorrect preparations and no suggestions can be created, the Run Netting is interrupted. This way you will quickly find any errors in the bases. Information about incorrect preparations is also shown directly after the calculation of lowest-level code when the procedure is run manually.
Via the AutoRuns is possible to select one of the alternatives "Print to PDF file and Send via E-mail", "Print" or "MONITOR Agent Results" (one of the alternatives) to run the Run Netting in the same way as when selecting Calculate / Save. The difference is that you will receive a message if there are incorrect preparations.
Sales Forecasts
You can also perform a netting run that takes saved sales forecasts into consideration. In order to avoid having forecasts and received customer orders double your requirement, the program will deduct from the forecasts. This is determined by the setting Sales forecast from forecast register is deducted... (Never, From lead time, From present time), under the heading Requirements Planning under the Inventory tab in the Settings procedure. The calculation rule for this stipulates that each forecast record "from today and up to and including" the date of the last placed customer order, is decreased with the factor "placed orders/forecast quantity". In this case, the sales forecast for customers (customer order rows with a Forecast status) are treated as sales. In other words, they are calculated as if they were orders and not forecasts.
Example: If the forecast says that we will sell 100 parts within a certain period, and if we have already received a customer order for 30 parts for the same period, we will deduct these 30 parts from the forecast. If our 100 parts are divided into two forecast records, they will each be reduced by 15 parts each. Any forecast items that are further ahead in time than the last customer order will not be affected by this deduction.
Quote Backlog
A netting run can also include the quotes in your quote backlog that have been selected for simulation/requirements planning. A quote can be given a probability code that indicates the result that can be expected from the quote. Each probability code has a certain percentage value. For example, two quotes have a probability of 50 % and the same part with a quantity of 100. This would give a total quantity of 200 for that part. The probability (or likelihood) is that 50% of the quotes will be accepted, which means that both quotes are requirement calculated with a total quantity of 100 parts.
CDT
The netting run can also consider reservations that were created in the Check Delivery Times (CDT) procedure.
Important Considerations during Netting Runs
To perform requirements planning using procedures such as Run Netting, you must make sure all your part data is correct, otherwise the system will create inaccurate manufacturing order/purchase order suggestions. Should these suggestions be used to generate actual orders (release orders), then these orders will be inaccurate. It is therefore important to check the following part information before running a netting run for the first time:
What Update Options Exist for this Procedure?
You can purge all previous runs, or only your own previous runs, before starting a new run.
In the list you can enter another administrator for the part than the existing.
A netting run always generates manufacturing order suggestions for M-parts, S-parts and F-parts, as well as purchase order suggestions for P-parts, should any shortages occur for them.
Fixed Delivery Day on Subcontracts
When a manufacturing order that contains subcontracts is registered/planned, the fixed delivery day on the subcontract can be considered. This is determined by the setting Use fixed delivery day on subcontracts, under Orders under the Manufacturing tab in the Settings procedure.
Distribute Purchase between Suppliers
If you have activated the setting Distribute purchase between several suppliers? you can enter a distribution percentage in a supplier link for a part in the Update Part - Purchase procedure. This setting is found under the Orders / Inquiries heading under the Purchase tab in the Settings procedure. This makes it possible to distribute the purchases of the part between two or more suppliers according to the entered percentages. Only one purchase order suggestion will be created, but two or more purchase orders will be created when the suggestion is generated into actual purchase orders. One purchase order will then be created for each supplier according to the distribution in the supplier links.
Max. Quantity
If a max. quantity is entered for a part, the Run Netting, Requirement Calculation and manually registered manufacturing orders will take the part's max. quantity into consideration. Order suggestions and manufacturing orders will never exceed this quantity. If the requirement is larger the current order will be divided into several manufacturing orders with the max. quantity as the largest order quantity. The start and finish periods on the divided orders will be distributed evenly during the period. This to avoid that loading and material requirements will be created against the same finish time.
Example: The requirement is 100 pcs (pieces) and the max. quantity for the part is 20 pcs. This means that you need 5 manufacturing orders to fulfill the requirement.
The max. quantity applies only to the part types S and M, and can be entered only if you have activated the setting Show max. quantity, under Requirements Planning under the Inventory tab in the Settings procedure.
Can Any Charts Be Displayed?
There are no charts or graphs available in this list.
Window Functions
Use Run in the list to start the Netting run. A control question will pop up that must be confirmed, before the run begins.
Read more about the other Window functions under Window Functions in the MONITOR Basics guide.
See also: