Message type: E = Error
Message class: O8 - IS-Oil: TD Transportation and Distribution
Message number: 844
Message text: Material & already exists
The entry already exists and cannot be overwritten.
The data entered will not be used.
Enter your data with a different key, or change the existing entry.
Error message extract from SAP system. Copyright SAP SE.
O8844
- Material & already exists ?The SAP error message O8844, which states "Material & already exists," typically occurs when you attempt to create a new material master record in SAP, but the material number you are trying to use is already assigned to an existing material. This can happen in various scenarios, such as during the creation of a material in the Material Master (MM01) transaction.
Cause: Duplicate Material Number: The most common cause is that the material number you are trying to create already exists in the system. Incorrect Number Range: If the number range for material numbers is not set up correctly, it may lead to conflicts. Different Views: The material might exist in a different view or plant, which can cause confusion if you are not aware of it.
Solution: Check Existing Materials: Before creating a new material, check if the material number already exists. You can do this by using transaction codes like MM03 (Display Material) or
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