SAP Message RSAU500 - Error in the unit conversion. Error & occurred

Diagnosis
Error &V1&
An error occurred in the conversion of units. Currency units wereconverted. Invalid data from the source system may have been used. Theerror occurred in routine &V2&, whilst processing data record &V3&.

Procedure
Check and correct the data from the source system (IDoc), and yourupdate rules, as required.
The following list contains the types of errors:
Error no. | Meaning
-----------|------------------------------------------------
101 | Source currency not found
102 | Target currency not found
103 | Date not found
104 | Currency translation type not found
105 | Conflict source currency
106 | Conflict target currency
107 | Conflict date
108 | Invalid source currency
109 | Invalid target currency
110 | Exchange rate not found
111 | General error in the currency translation