Why FM DD_GET_NAMETAB?

Hi All,

I am using a SAP fm to update something. For one scenario it is working. But for another scenario it is not working. I debugged the FM and came to know that it is due to FM DD_GET_NAMETAB. CAn somebody tell what could be possible reason for it? Why sap is calling this FM? How to avoid this error?

Please help.

Regards,

Jeetu