Unrealistic BSW % value greater than 10%

What causes this issue?

You have entered a Base Sediment & Water (BSW) fraction for a
quantity converison which is greater than 10% . This is an
unrealistically high value.

System Response

The system issued a warning message. Processing can continue.

How to fix this error?

Check your entry and, if necessary, correct it.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.