Batch-Specific Units of Measure Conversion Factor

Hi Experts,

We have the following situation.

We have a material which is Batch managed and has Batch-Specific Units of measure. We did the following steps for configuration:

1. Tx. CUNI
   • Created Batch-Specific UM: TUB (TUBE)
   • Created Base UM (or we can use a Standard UM): M (Meters)
   • Created the Characteristic UM: M/TUBE (Meters/Tube)
2. Activated Batch-Specific Units of Measure.
3. Defined the Batch-Specific UM: TUB.
4. Defined calculation of Base Quantity from Product Quantity.
5. Tx. CT04 Created characteristic with values.
6. Tx. CL01 Created class.
7. Created Split valuation.
8. Created a new material and assigned the Valuation Category X and the conversion factor in Additional Data > Proportion/prod.unit: the default conversion factor is 5.80/1.
9. Tx. MSC1N Created two different Batches with different values (conversion factor).
   • Batch 5.80 Meters: 5.80/1
   • Batch 3.00 Meters: 3.00/1

In stock I have:

• Batch 5.80 Meters     1 TUB   or   5.80 M
• Batch 3.00 Meters     1 TUB   or   3.00 M

Until this point everything is fine:

• Conversion factor is working for each specific batch.
• The value of the stock is correct: 1 TUB of Batch 5.80 Meters is almost twice as expensive as 1 TUB of Batch 3.00 Meters.

We then create a Maintenance Order and release it requiring:

• 2 TUB Batch 5.80 Meters (This will generate a Purchase Requisition when MRP runs)
• 1 TUB Batch 3.00 Meters

When the system does the reservation, instead of reserving a total of 14.60 meteres ( 5.80 x 2   +   3.00 x 1 ) it reserves 17.40 meters. It is as if the system was converting the 1 TUB of Batch 3.00 Meters into 5.80 meters instead of 3.00 meters.

Any ideas why when the order requires 1 TUB Batch 3.00 Meters the system is not using the Batch 3.00 Meters conversion factor (3.00/1) for the material reservation and is instead using the default conversion factor (5.80/1) ?

Thank you in advance.

Best Regards,

Leonidas Oyaga