Reg: Addition of Tab  with fields to the Invoice Header - VF01

Hi,
  The Requirement is to add an additional tab to the Invoice Header -VF01.Is there any Badi to add the Tab?
Please Provide me the Solution.
Thanks in Advance,
Praveen

Hi Sourabh,
       Thanks for the Reply.But I could not create an Implemention for the BADI : BADI_SD_CUST_HEAD as it is for SAP internal use.
      Is there any other alternative where we can add a tab to the Invoice Header - VF01.
Please provide me a solution.It would be of great help to me.
Thanks in Advance,
Praveen

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