CREATION OF CUSTOM TABLES

hi

I AM TRYING TO CREATE A CUSTOM IN ABAP

I followed the following procedure

SE11

SPCIFIED THE CUSTOM TABLE NAME

CLICKED ON CREATE BUTTON

THEN SPECIFIED SHORT DESCRIPTION

For Delivery Class I specified as C

For DataBrowser and Table variant I specified as Display and Maintenance allowed

Once I click on save before specifying other properties I see the following error displayed

"RFC system error for destination GTADIR_SERVER"

Thanks in advance