Exception message 26, (only warnning not an error mesage).

Question

Dear Experts
my environment is MTO, which generates a huge number of production orders daily with a big number of exception messages which some times are not enough to adopt the PP activities on the system,
in the case of  (Procurement type:X) which the planned order for a HALB or FERT, material can be produced internally or procured externally, i can partially convert a part of the total quantity into a production order or a purchase requisition  and so the remaining qty,  into any of the both procurement proposals.
now if the total quantities of the partially converted production orders and purchase requisition, is exceeding than the planned order qty, i am getting the exception message 26, (only warnning not an error mesage).
my requirement: i want the system to restrict users to covert the planned order into a production order or a purchase requisition if the total quantities of all the partially converted production orders and purchase requisitions are exceeding more than the original planned order quantity.
Example:
planned order qty, is 10 EA, if i convert a qty, of 3 EA into a partial production order and another qty, with 4 EA into a purchase requisition,
system must restrict me to convert the remaining qty, into a production order or a purchase requisition  if i changed the qty, to a qty, exceeds more than 3 EA.
Thanks in advance.

Answer 1

Ahmed,
Exception message 26 is neither a warning nor an error.  It is an alert that a certain business condition exists (excess stock in a segment).  The general rule for exceptions is that it is up to the planner to determine the significance, and to use your company's business rules to react accordingly.
The solution to your stated requirement does not exist in standard SAP.  To me, it makes no sense to lock the system down in this way.  Message 26 can come from overconversion, but it can also come if the requirements are reduced.
If you still feel that this functionality must be implemented, I would suggest this partial solution, that uses standard functionality.  Have your planners perform only the conversions of the plndords to firmed purchase reqs, for a given time frame, all at one time, and decline to convert the remaining balances to production orders. Then, re-run MRP with delete/recreate.  This will create planned orders for exactly the balance(s) required.  Then, you could immediately use the standard mass program to convert the 'balance' Planned orders to Production orders.  The mass conversion could be the second step of an auxiliary MRP job.
If you insist that the requirements must be met using the method you indicated above, then it implies that every program that could be used to convert a PlndOrd to something else must be modified.  I don't think I would attempt this unless there were no other possibilities.
Best Regards,
DB49