SAP Message AH887 - Device &1 register &2: not possible to convert &3 to &4

Diagnosis
Conversion of the measurement units is not possible. Due to technicalreasons, the error cannot be analyzed in dialog mode.

Procedure
If you are unable to localize the error directly, call the functionmodule CONVERSION_FACTOR_GET in the test environment (TransactionSE37) using the following parameters:
UNIT_IN = &V3&
UNIT_OUT = &V4&
This provides you with a more detailed analysis of the error.