diff --git a/api/http/handler/edgegroups/edgegroup_update.go b/api/http/handler/edgegroups/edgegroup_update.go
index e67607d92..319a1b03b 100644
--- a/api/http/handler/edgegroups/edgegroup_update.go
+++ b/api/http/handler/edgegroups/edgegroup_update.go
@@ -186,6 +186,7 @@ func (handler *Handler) updateEndpointStacks(tx dataservices.DataStoreTx, endpoi
 	if relation == nil {
 		relation = &portainer.EndpointRelation{
 			EndpointID: endpoint.ID,
+			EdgeStacks: make(map[portainer.EdgeStackID]bool),
 		}
 	}
 	relation.EdgeStacks = edgeStackSet
diff --git a/api/http/handler/edgestacks/edgestack_update.go b/api/http/handler/edgestacks/edgestack_update.go
index 9b5bb623d..593e403ef 100644
--- a/api/http/handler/edgestacks/edgestack_update.go
+++ b/api/http/handler/edgestacks/edgestack_update.go
@@ -107,7 +107,7 @@ func (handler *Handler) updateEdgeStack(tx dataservices.DataStoreTx, stackID por
 
 	hasWrongType, err := hasWrongEnvironmentType(tx.Endpoint(), relatedEndpointIds, payload.DeploymentType)
 	if err != nil {
-		return nil, httperror.BadRequest("unable to check for existence of non fitting environments: %w", err)
+		return nil, httperror.InternalServerError("unable to check for existence of non fitting environments: %w", err)
 	}
 	if hasWrongType {
 		return nil, httperror.BadRequest("edge stack with config do not match the environment type", nil)
@@ -151,6 +151,9 @@ func (handler *Handler) handleChangeEdgeGroups(tx dataservices.DataStoreTx, edge
 	for endpointID := range endpointsToRemove {
 		relation, err := tx.EndpointRelation().EndpointRelation(endpointID)
 		if err != nil {
+			if tx.IsErrObjectNotFound(err) {
+				continue
+			}
 			return nil, nil, errors.WithMessage(err, "Unable to find environment relation in database")
 		}
 
@@ -170,10 +173,16 @@ func (handler *Handler) handleChangeEdgeGroups(tx dataservices.DataStoreTx, edge
 
 	for endpointID := range endpointsToAdd {
 		relation, err := tx.EndpointRelation().EndpointRelation(endpointID)
-		if err != nil {
+		if err != nil && !tx.IsErrObjectNotFound(err) {
 			return nil, nil, errors.WithMessage(err, "Unable to find environment relation in database")
 		}
 
+		if relation == nil {
+			relation = &portainer.EndpointRelation{
+				EndpointID: endpointID,
+				EdgeStacks: map[portainer.EdgeStackID]bool{},
+			}
+		}
 		relation.EdgeStacks[edgeStackID] = true
 
 		if err := tx.EndpointRelation().UpdateEndpointRelation(endpointID, relation); err != nil {
diff --git a/api/http/handler/endpointedge/endpointedge_status_inspect.go b/api/http/handler/endpointedge/endpointedge_status_inspect.go
index 9bd341561..4d6368493 100644
--- a/api/http/handler/endpointedge/endpointedge_status_inspect.go
+++ b/api/http/handler/endpointedge/endpointedge_status_inspect.go
@@ -264,6 +264,9 @@ func (handler *Handler) buildSchedules(tx dataservices.DataStoreTx, endpointID p
 func (handler *Handler) buildEdgeStacks(tx dataservices.DataStoreTx, endpointID portainer.EndpointID) ([]stackStatusResponse, *httperror.HandlerError) {
 	relation, err := tx.EndpointRelation().EndpointRelation(endpointID)
 	if err != nil {
+		if tx.IsErrObjectNotFound(err) {
+			return nil, nil
+		}
 		return nil, httperror.InternalServerError("Unable to retrieve relation object from the database", err)
 	}
 
diff --git a/api/http/handler/endpointgroups/endpoints.go b/api/http/handler/endpointgroups/endpoints.go
index b7c9771bb..b34032d9e 100644
--- a/api/http/handler/endpointgroups/endpoints.go
+++ b/api/http/handler/endpointgroups/endpoints.go
@@ -21,10 +21,17 @@ func (handler *Handler) updateEndpointRelations(tx dataservices.DataStoreTx, end
 	}
 
 	endpointRelation, err := tx.EndpointRelation().EndpointRelation(endpoint.ID)
-	if err != nil {
+	if err != nil && !tx.IsErrObjectNotFound(err) {
 		return err
 	}
 
+	if endpointRelation == nil {
+		endpointRelation = &portainer.EndpointRelation{
+			EndpointID: endpoint.ID,
+			EdgeStacks: make(map[portainer.EdgeStackID]bool),
+		}
+	}
+
 	edgeGroups, err := tx.EdgeGroup().ReadAll()
 	if err != nil {
 		return err
@@ -32,6 +39,9 @@ func (handler *Handler) updateEndpointRelations(tx dataservices.DataStoreTx, end
 
 	edgeStacks, err := tx.EdgeStack().EdgeStacks()
 	if err != nil {
+		if tx.IsErrObjectNotFound(err) {
+			return nil
+		}
 		return err
 	}
 
diff --git a/api/http/handler/endpoints/update_edge_relations.go b/api/http/handler/endpoints/update_edge_relations.go
index 8bebadedd..1390c9fd4 100644
--- a/api/http/handler/endpoints/update_edge_relations.go
+++ b/api/http/handler/endpoints/update_edge_relations.go
@@ -23,6 +23,7 @@ func (handler *Handler) updateEdgeRelations(tx dataservices.DataStoreTx, endpoin
 
 		relation = &portainer.EndpointRelation{
 			EndpointID: endpoint.ID,
+			EdgeStacks: map[portainer.EdgeStackID]bool{},
 		}
 		if err := tx.EndpointRelation().Create(relation); err != nil {
 			return errors.WithMessage(err, "Unable to create environment relation inside the database")
diff --git a/api/http/handler/tags/tag_delete.go b/api/http/handler/tags/tag_delete.go
index ad8ef1347..4f8554faf 100644
--- a/api/http/handler/tags/tag_delete.go
+++ b/api/http/handler/tags/tag_delete.go
@@ -133,10 +133,17 @@ func deleteTag(tx dataservices.DataStoreTx, tagID portainer.TagID) error {
 
 func updateEndpointRelations(tx dataservices.DataStoreTx, endpoint portainer.Endpoint, edgeGroups []portainer.EdgeGroup, edgeStacks []portainer.EdgeStack) error {
 	endpointRelation, err := tx.EndpointRelation().EndpointRelation(endpoint.ID)
-	if err != nil {
+	if err != nil && !tx.IsErrObjectNotFound(err) {
 		return err
 	}
 
+	if endpointRelation == nil {
+		endpointRelation = &portainer.EndpointRelation{
+			EndpointID: endpoint.ID,
+			EdgeStacks: make(map[portainer.EdgeStackID]bool),
+		}
+	}
+
 	endpointGroup, err := tx.EndpointGroup().Read(endpoint.GroupID)
 	if err != nil {
 		return err
@@ -147,6 +154,7 @@ func updateEndpointRelations(tx dataservices.DataStoreTx, endpoint portainer.End
 	for _, edgeStackID := range endpointStacks {
 		stacksSet[edgeStackID] = true
 	}
+
 	endpointRelation.EdgeStacks = stacksSet
 
 	return tx.EndpointRelation().UpdateEndpointRelation(endpoint.ID, endpointRelation)
diff --git a/api/internal/edge/edgestacks/service.go b/api/internal/edge/edgestacks/service.go
index 4fc6943af..3a19e8c9d 100644
--- a/api/internal/edge/edgestacks/service.go
+++ b/api/internal/edge/edgestacks/service.go
@@ -11,6 +11,7 @@ import (
 	httperrors "github.com/portainer/portainer/api/http/errors"
 	"github.com/portainer/portainer/api/internal/edge"
 	edgetypes "github.com/portainer/portainer/api/internal/edge/types"
+	"github.com/rs/zerolog/log"
 
 	"github.com/pkg/errors"
 )
@@ -119,6 +120,9 @@ func (service *Service) updateEndpointRelations(tx dataservices.DataStoreTx, edg
 	for _, endpointID := range relatedEndpointIds {
 		relation, err := endpointRelationService.EndpointRelation(endpointID)
 		if err != nil {
+			if tx.IsErrObjectNotFound(err) {
+				continue
+			}
 			return fmt.Errorf("unable to find endpoint relation in database: %w", err)
 		}
 
@@ -147,6 +151,14 @@ func (service *Service) DeleteEdgeStack(tx dataservices.DataStoreTx, edgeStackID
 	for _, endpointID := range relatedEndpointIds {
 		relation, err := tx.EndpointRelation().EndpointRelation(endpointID)
 		if err != nil {
+			if tx.IsErrObjectNotFound(err) {
+				log.Warn().
+					Int("endpoint_id", int(endpointID)).
+					Msg("Unable to find endpoint relation in database, skipping")
+
+				continue
+			}
+
 			return errors.WithMessage(err, "Unable to find environment relation in database")
 		}