code: protected function getForcedSignUpDebitCustIds()
      {
          if (is_null($this->cacheSignUpDebitCustIds)) {
              $ids = [];
              $calcId = $this->queryGetLastSignUpCalcId->exec();
              $where = \Praxigento\BonusHybrid\Repo\Data\Registry\SignUpDebit::A_CALC_REF . '=' . (int)$calcId;
              $rs = $this->daoRegSignUpDebit->get($where);
              /** @var \Praxigento\BonusHybrid\Repo\Data\Registry\SignUpDebit $one */
              foreach ($rs as $one) {
                  $custRef = $one->getCustomerRef();
                  $ids[] = $custRef;
              }
              $this->cacheSignUpDebitCustIds = $ids;
          }
          return $this->cacheSignUpDebitCustIds;
  
      }
docs: MOBI-635: get customers w/o 100 PV from Sign Up Volume Debit