3751889 - Sites within Plant group not copied when copying promotion in tcode WAK1 in SAP S/4Hana

• When creating a new promotion in tcode WAK1 by copying an existing promotion, the plant group is copied but the sites within the group are not.
• The reference promotion uses an internal site group with Status 3 (intra-promotional site groups generated manually).
• When you check the site group tab in the copied promotion in WAK3 --> Warning message appears: "Site Group YYYY Does Not Contain Any Sites" (Message No. WRF_RPR_IPGRP032).

• Product: SAP S/4HANA
• Seasonal / Promotion Planning

WAK1, promotion copy, plant group, site group, internal plant group, status 3, intra-promotional site groups, WRF_RPR_IPGRP032, site group 01 does not contain any sites, CL_WRF_RPR_IPGRP_COLL_PG, ADD_ITEM, FILGR, retail promotion, copy behavior, s/4hana retail , KBA , LO-RFM-MD-PR , Seasonal / Promotion Planning , Known Error