SAP Message RSTRAN310 - Key figure <> 0 not allowed for unit ' '; see long text

Diagnosis
The key figure &v1& with the value &v2& has the unit/currency &v3& withthe value 'blank'.

System Response
A key figure that is not equal to 0 and for which no unit / currency isset has an inconsistent data state. The data record is not processed.

Procedure
Correct your source data.