diff --git a/migration/iD10/oracle/202312041243_IDEMPIERE-5782.sql b/migration/iD10/oracle/202312041243_IDEMPIERE-5782.sql
new file mode 100644
index 0000000000..4ddf9edfd6
--- /dev/null
+++ b/migration/iD10/oracle/202312041243_IDEMPIERE-5782.sql
@@ -0,0 +1,10 @@
+-- IDEMPIERE-5782 Generated Shipments/MR and Invoices with Invalid Sales Rep
+SELECT register_migration_script('202312041243_IDEMPIERE-5782.sql') FROM dual;
+
+SET SQLBLANKLINES ON
+SET DEFINE OFF
+
+-- Dec 4, 2023, 12:43:33 PM CET
+UPDATE AD_Column SET Callout='org.adempiere.model.CalloutRMA.inout',Updated=TO_TIMESTAMP('2023-12-04 12:43:33','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=10842
+;
+
diff --git a/migration/iD10/postgresql/202312041243_IDEMPIERE-5782.sql b/migration/iD10/postgresql/202312041243_IDEMPIERE-5782.sql
new file mode 100644
index 0000000000..41a4557cce
--- /dev/null
+++ b/migration/iD10/postgresql/202312041243_IDEMPIERE-5782.sql
@@ -0,0 +1,7 @@
+-- IDEMPIERE-5782 Generated Shipments/MR and Invoices with Invalid Sales Rep
+SELECT register_migration_script('202312041243_IDEMPIERE-5782.sql') FROM dual;
+
+-- Dec 4, 2023, 12:43:33 PM CET
+UPDATE AD_Column SET Callout='org.adempiere.model.CalloutRMA.inout',Updated=TO_TIMESTAMP('2023-12-04 12:43:33','YYYY-MM-DD HH24:MI:SS'),UpdatedBy=100 WHERE AD_Column_ID=10842
+;
+
diff --git a/org.adempiere.base.callout/src/org/adempiere/model/CalloutRMA.java b/org.adempiere.base.callout/src/org/adempiere/model/CalloutRMA.java
index 4eab58ce9a..d71138b047 100644
--- a/org.adempiere.base.callout/src/org/adempiere/model/CalloutRMA.java
+++ b/org.adempiere.base.callout/src/org/adempiere/model/CalloutRMA.java
@@ -28,6 +28,7 @@ import org.compiere.model.GridField;
 import org.compiere.model.GridTab;
 import org.compiere.model.I_C_InvoiceLine;
 import org.compiere.model.MCharge;
+import org.compiere.model.MInOut;
 import org.compiere.model.MInOutLine;
 import org.compiere.model.MInvoice;
 import org.compiere.model.MInvoiceLine;
@@ -255,4 +256,33 @@ public class CalloutRMA extends CalloutEngine {
 
 		return "";
 	}
+
+	/**
+	 * inOut - set sales rep based on shipment/receipt
+	 * 
+	 * @param ctx
+	 * @param WindowNo
+	 * @param mTab
+	 * @param mField
+	 * @param value
+	 * @return error message or ""
+	 */
+	public String inout(Properties ctx, int WindowNo, GridTab mTab, GridField mField, Object value) 
+	{
+		Integer M_InOut_ID = (Integer) value;
+		if (M_InOut_ID == null || M_InOut_ID.intValue() == 0)
+			return "";
+
+		MInOut inout = new MInOut(ctx, M_InOut_ID, null);
+		if (inout.get_ID() != 0)
+		{
+			if (inout.getSalesRep_ID() > 0)
+				mTab.setValue("SalesRep_ID", Integer.valueOf(inout.getSalesRep_ID()));
+			else
+				mTab.setValue("SalesRep_ID", null);
+		}
+
+		return "";
+	}
+
 }
diff --git a/org.adempiere.base.callout/src/org/compiere/model/CalloutInOut.java b/org.adempiere.base.callout/src/org/compiere/model/CalloutInOut.java
index d36ff9d6db..412e02f231 100644
--- a/org.adempiere.base.callout/src/org/compiere/model/CalloutInOut.java
+++ b/org.adempiere.base.callout/src/org/compiere/model/CalloutInOut.java
@@ -153,6 +153,7 @@ public class CalloutInOut extends CalloutEngine
 			mTab.setValue("FreightAmt", originalReceipt.getFreightAmt());
 
 			mTab.setValue("C_BPartner_ID", Integer.valueOf(originalReceipt.getC_BPartner_ID()));
+			mTab.setValue("SalesRep_ID", Integer.valueOf(originalReceipt.getSalesRep_ID()));
 
 			//[ 1867464 ]
 			mTab.setValue("C_BPartner_Location_ID", Integer.valueOf(originalReceipt.getC_BPartner_Location_ID()));
diff --git a/org.adempiere.base/src/org/compiere/model/MInOut.java b/org.adempiere.base/src/org/compiere/model/MInOut.java
index 1da39171da..619a9e7a32 100644
--- a/org.adempiere.base/src/org/compiere/model/MInOut.java
+++ b/org.adempiere.base/src/org/compiere/model/MInOut.java
@@ -1337,6 +1337,17 @@ public class MInOut extends X_M_InOut implements DocAction, IDocsPostProcess
     		}
         }
 
+        if (getSalesRep_ID() == 0) {
+        	if (getC_Order_ID() > 0) {
+        		MOrder order = new MOrder(getCtx(), getC_Order_ID(), get_TrxName());
+        		setSalesRep_ID(order.getSalesRep_ID());
+        	} else if (getM_RMA_ID() > 0) {
+        		MRMA rma = new MRMA(getCtx(), getM_RMA_ID(), get_TrxName());
+        		MInOut originalReceipt = rma.getShipment();
+        		setSalesRep_ID(originalReceipt.getSalesRep_ID());
+        	}
+        }
+
 		return true;
 	}	//	beforeSave
 
diff --git a/org.adempiere.base/src/org/compiere/model/MRMA.java b/org.adempiere.base/src/org/compiere/model/MRMA.java
index 7450110c25..1923f76b9d 100644
--- a/org.adempiere.base/src/org/compiere/model/MRMA.java
+++ b/org.adempiere.base/src/org/compiere/model/MRMA.java
@@ -294,6 +294,10 @@ public class MRMA extends X_M_RMA implements DocAction
 		    return false;
 		}
 
+        if (getSalesRep_ID() == 0 && m_inout != null && m_inout.getSalesRep_ID() > 0) {
+       		setSalesRep_ID(m_inout.getSalesRep_ID());
+        }
+
 		return true;
 	}	//	beforeSave