Knowledge Management

Question:
Hi all,
Is it possible to change a material from type FERT to HAWA?
The material has been being used for a long period of time, so it has stock and movements attached to it.
We are working on a 46C release.
Thanks in advance.
Answer:
Dear German,
Changes in material type and base unit of measure in a live system are possible but may be really painfull depending on the stock and open orders routing etc which are active for the material
There is no easy way out in this case! One has to clear stocks and open POs
Regards
Matt
Answer:
This is what I think:
close all the open PO, TR and TO (if you 've WM). no PI of course.
do GI of this material - MB1A, 201 mvt type.
now your stock qty is zero in your system.
Period closed
change the Mat Type.
reverse all the material back to your system
help?
Answer:
Thank you very much for your replies, Matt and pm.
Your information is very helpful for me.
What TR, TO an PI stand for?
We have not intalled WM.
Regards.
Answer:
If you haven't installed WM then there is no need for TR & TO.
TR - Transfer Requirement
TO - Transfer Order
Manus
Answer:
If you haven't installed WM then there is no need for TR & TO.
TR - Transfer Requirement
TO - Transfer Order
PI - Physical Inventory
Manus
Answer:
Dear Manus,
Thank you very much for your help.
Sorry, but I have a final question:
"Period close": does it mean that the period must be closed before changing material type?.
Both MM period for movements and accounting period?
Thanks again.
Answer:
Dear Manus,
Thank you very much for your help.
Sorry, but I have a final question:
"Period close": does it mean that the period must be closed before changing material type?.
Both MM period for movements and accounting period?
Thanks again.
yes... need to be closed
PM
Answer:
I have different opinion.
Especially saying you need to close a period is really dangerous, someone could think that it does not hurt to close a period in the middle of a month.
Here is probably meant that a period change makes life easier, and you should wait for the next step until the period is closed at the end of the month.
SAP has following info:
When maintaining a material master record, you change the base unit of measure or the batch management requirement indicator or the valuation category. The system then tells you that this change is not possible since stocks still exist. However, no stocks are shown for the material in the stock overview.
Cause and prerequisites
The message that stocks still exist refers not only to stocks in the current period, but also to stocks in the previous period.
The reason for checking previous period stocks is that postings can also be made to the previous period when entering goods movements. This would result in inconsistencies if the base unit of measure had meanwhile been changed.
Solution
Please check whether stocks still exist for the previous period by displaying, for example, the plant stock view or storage location stock view of the material. You do this by selecting "Extras -> Previous period -> Prev. pd SLoc. stock or Prev. pd plant stock".
If previous period stocks exist, you can make a withdrawal posting as follows:
1. Post the same amount to current period stock (for example, using movement type 561) so that previous period stock and current period stock are identical.
2. Make a withdrawal posting in the previous period for the stock together with posting date (for example, using movement type 562).
You can now try again to change the base unit of measure or the batch management requirement indicator.
Now reverse the stock postings above if necessary.
Answer:
Thank you very much for your help.
Bset regards.
Answer:
Still another opinion,
If the valuation class for the FERT and HAWA are the same (and remember that this implies that the general ledger postings in table T030 for automatic postings must be the same) you should be able to do it on the fly i.e. no need for writing out invetory etc....nothing more than just changing it in transaction MMAM.
Test it in your sandbox client, and you will see that it works fine.
However, if different valuation classes, then consider all of the aforementioned posts.
Regards
Dave
Answer:
Thank you for your opinion.
In this case FERT and HAWA have different valution classes.