Would like to know can we pass the Payload/Record set through stream object to record mapper directly ?

My Process will get payload like :

OVMREADREQDSC1_20260603120547|SPINE_OVM_READRESP_DSC1|2|00
RESPONSE_CODE|NHS_NUMBER|DATE_OF_BIRTH|HO_STATUS_C|HO_STATUS|OVM_STATUS|ALLOC_DATE|SUPERSEDED_BY|FAMILY_NAME|GIVEN_NAME|OTHER_NAME|GENDER|DATE_OF_DEATH|ADDRESS_LINE1|ADDRESS_LINE2|ADDRESS_LINE3|ADDRESS_LINE4|ADDRESS_LINE5|POSTCODE|ADD_BEF_DATE|PHONE|GP_PRACTICE_C|GP_REG_DATE|HO_STATUS_C|HO_STATUS|HO_END_DATE|HO_REFERENCE|HO_BRP|PRODUCT_TYPE|IMMIGRATION_STATUS|OVM_STATUS|OVM_SEEN_DATE|HO_START_DATE|EMAIL|OVM_DATE APPLIED|EHIC_ID_NO|EHIC_CARD_NO|EHIC_EXP_DATE|EHIC_INST_ID|EHIC_COUNTRY_C|EHIC_COUNTRY|S1_STATUS_C|S1_STATUS|S2_COUNTRY_C|S2_COUNTRY|S2_FROM|S2_TO|PRC_ID_NO|PRC_CARD_NO|PRC_INST_ID|PRC_EHIC_EXP_DATE|PRC_COUNTRY_C|PRC_COUNTRY|PRC_FROM|PRC_TO|HEALTHCARE_STATUS|HO_NATIONALITY
01|9000000000|||||||||||||||||||||||||||||||||||||||||||||||||||||||
01|9000000003|||||||||||||||||||||||||||||||||||||||||||||||||||||||

Can we pass this to Record mapper and get the records ?