Statements for Table VBAP could not be executed

Hi Experts

I had created a append structure ZVBAP and deleted due to error occurred in structure activation saying "Inconsistency in table VBAP".

So I have created new structure ZADD and trying to add fields and activate, but i got same error, when i adjust in SE14, I am getting the following error,

MAXEXTENTS UNLIMITED

PCTINCREASE 0000

FREELISTS 001)

ORA-00955: name is already used by an existing object

DDL time(___3): ........12 milliseconds

The SQL statement was not executed

Statements for Table VBAP could not be executed

Request for VBAP could not be executed

Plelase anyone help me on this issue.

Regards

Rajaram