When you execute a query, the termination CX_SY_CONVERSION_NO_NUMBER occurs. Other terms
Query, exception, variable, negative figure Reason and Prerequisites
Program error in the function group RRS2 Solution
The error occurs if the query contains an exception in which the limits are set by variables. If a negative value is entered for the variable, the above termination occurs.
Import Support Package 09 for 3.0A (BW3.0A patch09 or SAPKW30A09) into your BW system. The Support Package is available once note 0458699 with the short text "SAPBWNews BW 3.0A Support Package 09", which describes this Support Package in more detail, is released for customers.
Note 0458699 may already be available to provide advance information before the Support Package is released. However, in this case, the short text still contains the phrase "Preliminary version".
Import Support Package 02 for 3.0B (BW3.0B patch02 or SAPKW30B02) into your BW system. The Support Package is available once note 0493971 with the short text "SAPBWNews BW 3.0B Support Package 02", which describes this Support Package in more detail, has been released for customers.
Refer to note 110934 which provides information on BW Support Packages.