R12 SEPA PAYMENT: TAG <PmtInfId> must be shown only on the XML header, not on each detail

Dear community,
We are using SEPA unstructured Payment format in SEPA v3.3 (pain.001.001.02 -- SEPA Credit Transfer Initiation Template) and the tag PmtInfId is  appearing multiple times. After the upgrade in R12, in the SEPA PAYMENT XML file, we have the field "PmtInfId" on the header and on each detail.
We receive bank instructions to inform us that we must have only one time the tag "<PmtInf> " in the SEPA in the header and not for each payment detail.

- <PmtInf>

  <PmtInfId>129228-1</PmtInfId>

  <PmtMtd>TRF</PmtMtd>

- <PmtTpInf>

  <InstrPrty>NORM</InstrPrty>

- <SvcLvl>

  <Cd>SEPA</Cd>

  </SvcLvl>

  <CtgyPurp>SUPP</CtgyPurp>

  </PmtTpInf>

  <ReqdExctnDt>2013-05-21</ReqdExctnDt>