Error loading data from R/3

Hi,

I am loading hierarhy data into BW from R/3 for InfoObject 0CS_UNIT and the following error message came up. What I do not understand here is that there is no error for all the records of format "MEXXXXMG" (where X is any numeric value) but all the records of the format "MEXXXX00" (zeroes at the end)failed. This infoObject uses alpha conversion exit. Why is it failing when there are zeroes at the end. And I am sure that there are no blank characters anywhere.

<b>SYSTEM ERROR MESSAGE</b>

Diagnosis

The technical node name for node id 00000010 is not consistent for conversion exit ALPHA , which is stored with InfoObject 0CS_UNIT .

Possible reasons for the error:

The original consistent value returned by the dataSource was changed by a conversion routine to a non-consistent conversion exit value. The DataSource returns a value that is not consistent in the conversion exit.

System response

Loading the hierarchy was terminated.

Procedure

Check whether the correct conversion exit was entered for the InfoObject. If necessary, change the conversion exit, conversion routine or the data to be extracted.

A further option is to activate automatic conversion in the transfer rules. Here, the system executes the conversion exit, making sure that the data is in the correct format.

<b>SYSTEM ERROR MESSAGE END</b>

COuld you please share your insight and experience.

Thanks

John