Hi,
It must have to do with missing Unit of Measurement conversion rules. This has to be maintained in Customizing IMG (SAP NetWeaver > General settings > Check Units of Measurement) or t/code CUNI.
Please double-click on the error message and share the long text. I think it will contain a similar suggestion.
Last but not least, I read another discussion TR status differs in ECC Quality & Production for Include ZXRSAU01 which seems to be related. Did you implement any logic in Enhancement RSAP0001 for this DataSource? If yes, is it related to Unit of Measurement (conversion)? If so, please share the respective coding.
Best regards,
Sander