We are implementing a CRM system, and need to extract customer details held in SAP. An Abap Program has been written to extract all of the information that we need.
We anticipate that after the full extract we will need to extract those customers whose details were created or changed after the initial extract. Transaction OV51 will display the changes to the customer. These changes are held in tables CDHDR and CDPOS.
But I cannot find a link between the customer number KNA1-KUNNR, and CDHDR.