MRP calculation warning messages

anthonyanito · 2006-06-15

Hi,

When the MRP is caluclated for a production order, the last few components can go below the current working days. For example, the current date is 15/06/06 but the last few component expected date 01/06/06. How do we avoid this? Can the system make a warning message to shift the due date of the production order? How do we determine the delivery date for a sales order considering the above scenario?

Thank you,

Anito

johnson_alonso · 2006-06-15

As far as I know when you run MRP and leave MPS unchecked, you will not obtain production order but only purchase order.
You may set lead time calculation field in the item card to ajdust your purchase items to arrive and set also production BOM lead time in the production BOM after the items arrived according to the lead time you've set in the item card and lead time in the prod. BOM.
If you don't use routing, system will schedule your production planning backward based on expected delivery date on the sales order header, and also consider your product item lead time.

Rgds,
Johnson

anthonyanito · 2006-06-15

Hi,

Thanks for the reply.

What I wanted to know is that when you run MRP the due dates of the items should not be before the current working day. For example:

Current working day = 15/06/06
Item A due date = 01/06/06

I get the order today, and when I calculate the availability of the components, the due dates should be after the current date. In case if it goes before the current working day, then a warning should be issued.

Is navision provide any functionality to handle the above problem?

Thank you,

Anito

johnson_alonso · 2006-06-15

I am not sure I understand your question then. if the due date of components belows the current date, usually it will be coloured red. if you creatre a new SO or purchase order then the date of delivery, order date or shipment date will be today's date but planned delivery date will be tomorrow (depends on safety lead time in the set up)
in case of due date of components after current date, it depends on your shipment date in SO you have created, lead time calculation in the item card and or routing run time. I've said that without them all, you will have a backward calculation in the planning worksheet.

Rgds,

johnson_alonso · 2006-06-15

I am not sure I understand your question then. if the due date of components belows the current date, usually it will be coloured red. if you creatre a new SO or purchase order, the date of delivery, order date or shipment date will be today's date but planned delivery date will be tomorrow (depends on safety lead time in the set up)
in case of due date of components after current date, it depends on your shipment date in SO you have created, lead time calculation in the item card and or routing run time. I've said that without them all, you will have a backward calculation in the planning worksheet.

Rgds,

anthonyanito · 2006-06-15

Hi,

Thanks for the reply again.

You had said in the first paragraph that if the due date is below working day, then it will be coloured in red. Well, its not coming in red. I'm using 3.70. Do you think that I have to do any more settings.

I'll try to explain the problem again. Lets say that to produce Item A I need Item B, C, D. The current working day is 15/06/06. I get a order for Item A, and the delivery date is 30/06/06. When I rund the MRP the following details appear:

Due Date Starting Date Ending Date

Item B - 25/06/06 19/06/06 25/06/06
Item C - 20/06/06 11/06/06 20/06/06
Item D - 10/06/06 01/06/06 10/06/06

If you notice that Item C is below the current working day. So, according to what you have said, it should be marked in red. But its not.

Now I want to move Item C starting date to Current working day, so the sales order delivery date also should be shifted. How do I do this?

Thank you.

Anito

johnson_alonso · 2006-06-15

Anthony wrote:

Now I want to move Item C starting date to Current working day, so the sales order delivery date also should be shifted. How do I do this?

you may changes the due date directly in the planning worksheet or in the purchase order or production order, then there will be a needs replanning warning from system and then you must return to sales order to correct your date, you must check planning warning in the manufacturing set up on tab general.

rgds,
Johnson

anthonyanito · 2006-06-15

Hi,

The planning warning in the Manufacturing setup is set to yes. But I still don't get the error message or coloured in red for the lines which goes below the current working day. I should be able to get the error message or atleast coloured in red to indicate that these lines dates should be moved up.

How do I do it?

Thank you,

anito

johnson_alonso · 2006-06-16

The planning warning in the Manufacturing setup is set to yes. But I still don't get the error message or coloured in red for the lines which goes below the current working day.

If it can't be red, I suggest you to use NAVW14.00.02 or SP1. Maybe there is an alternative, made some customisation for example.

Rgds,
Johnson

anthonyanito · 2006-06-19

Hi,

Thanks again for the reply.

This problem occurs in 3.70. But I think its due to the customization problem. So, we are trying to sort out that.

Anito

huanpt · 2006-09-13

Hi all,

I'm so sorry about insert into your thread!

I'm not sure whether my question will be relevant this topic or not.

I've studied some MRP software and can not understand how logic of "actions message" system run?!

- New

- Reschedule and Change Quantity

- Reschedule

- Change Quantity

- Max Order Exceeded

- Release Date Past Due

- Due Date Past Due

- Cancel

- Decrease

- Defer to …

- Expedite to…

In those message, I only know about "Cancel", "Defer to …" and "Expedite to…" but not rather clearly that :

- Defer to …: recommends that Scheduled Receipts for a period be defered to an earlier period to meet demand.

- Expedite to…: recommends that Scheduled Receipts for a period be expedited to a later period to decrease variant cost of Item.

- Cancel : cancel an opened order if not see any demand for the future

....

And how about the others?

When'll each of message above be issued?

Pls help me with an particular example as well as.

johnson_alonso · 2006-09-13

Huanpt wrote:

...I've studied some MRP software and can not understand how logic of "actions message" system run?!...

Only 5 from all of actions message you mention used in Navision. For other is not available because it has the same concepts with 5 action messages and in navision, they will combine them.
For more clear :read technicak whitepapersupplyplanning navision 4.0.

Rgds
Johnson

Rgds,

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