Message type: E = Error
Message class: AH - IS-U billing (master data)
Message number: 491
Message text: Units of measurement do not match
You have entered an inadmissible discount or price in fact maintenance.
Unit of measurement &v2& for the operand &v1& in the facts is different
to the unit of measurement &v3& for the discount or for the price.
Choose an appropriate discount or price using the input help in the
field <LS>Discount</> or <LS>Price</>.
Error message extract from SAP system. Copyright SAP SE.
AH491
- Units of measurement do not match ?The SAP error message AH491, which states "Units of measurement do not match," typically occurs when there is a discrepancy between the units of measurement used in different parts of a transaction or document. This can happen in various scenarios, such as when creating purchase orders, sales orders, or during inventory management. Causes of AH491 Error Mismatched Units: The most common cause is that the units of measurement for the materials or products involved in the transaction do not match. For example, if you are trying to order a product measured in kilograms but the system expects it in grams. Conversion Issues: If there are conversion factors defined for the units of measurement, and they are not set up correctly, this can lead to mismatches. Material Master Data: The material master data may have inconsistent unit definitions. For instance, the base unit of measure might differ from the unit of measure used in the
Get instant SAP help. Sign up for our Free Essentials Plan.
AH490
Operation mode &3 is not maintained from &1 to &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
AH489
Billing classes do not match
What causes this issue? For operand &v3&, you have selected a discount or price with billing class &v1& that does not correspond to b...
AH492
Reference bases do not match
What causes this issue? You have used an inadmissible discount key in fact maintenance. Reference base &v2& of the operand in the facts (quan...
AH493
Discount types do not match
What causes this issue? You have used an inadmissible discount key in the fact maintenance. Discount type &v2& from operand &v1& is d...
Click on this link to search all SAP messages.