diff --git a/src/main/java/org/ligoj/app/plugin/id/resource/CompanyResource.java b/src/main/java/org/ligoj/app/plugin/id/resource/CompanyResource.java
index 17094ae..885f3be 100644
--- a/src/main/java/org/ligoj/app/plugin/id/resource/CompanyResource.java
+++ b/src/main/java/org/ligoj/app/plugin/id/resource/CompanyResource.java
@@ -5,6 +5,7 @@
 
 import jakarta.transaction.Transactional;
 import jakarta.ws.rs.GET;
+import jakarta.ws.rs.POST;
 import jakarta.ws.rs.Path;
 import jakarta.ws.rs.Produces;
 import jakarta.ws.rs.core.Context;
@@ -137,6 +138,24 @@ public TableItem<ContainerCountVo> findAll(@Context final UriInfo uriInfo) {
 		});
 	}
 
+	/**
+	 * Create the given company. Concrete re-declaration of the inherited
+	 * {@code @POST create(V)} from {@link AbstractContainerResource} so JAX-RS
+	 * registers the route on the concrete bean — the parent annotation isn't
+	 * picked up because of type erasure on the generic parameter V.
+	 *
+	 * <p>Produces {@code text/plain} (not the class-level JSON default): the
+	 * returned identifier is a raw string, not a JSON document, so clients can
+	 * read it via {@code response.text()} instead of failing to parse an
+	 * unquoted scalar as JSON.
+	 */
+	@POST
+	@Produces(MediaType.TEXT_PLAIN)
+	@Override
+	public String create(final ContainerEditionVo container) {
+		return super.create(container);
+	}
+
 	@Override
 	protected void checkForDeletion(final ContainerOrg container) {
 		super.checkForDeletion(container);
diff --git a/src/main/java/org/ligoj/app/plugin/id/resource/GroupResource.java b/src/main/java/org/ligoj/app/plugin/id/resource/GroupResource.java
index 188f9ad..c324181 100644
--- a/src/main/java/org/ligoj/app/plugin/id/resource/GroupResource.java
+++ b/src/main/java/org/ligoj/app/plugin/id/resource/GroupResource.java
@@ -113,6 +113,24 @@ public boolean exists(@PathParam(GROUP_ATTRIBUTE) final String group) {
 		return findById(group) != null;
 	}
 
+	/**
+	 * Create the given group. Concrete re-declaration of the inherited
+	 * {@code @POST create(V)} from {@link AbstractContainerResource} so JAX-RS
+	 * registers the route on the concrete bean — the parent annotation isn't
+	 * picked up because of type erasure on the generic parameter V.
+	 *
+	 * <p>Produces {@code text/plain} (not the class-level JSON default): the
+	 * returned identifier is a raw string, not a JSON document, so clients can
+	 * read it via {@code response.text()} instead of failing to parse an
+	 * unquoted scalar as JSON.
+	 */
+	@POST
+	@Produces(MediaType.TEXT_PLAIN)
+	@Override
+	public String create(final GroupEditionVo container) {
+		return super.create(container);
+	}
+
 	@Override
 	protected String toDn(final GroupEditionVo container, final ContainerScope scope) {
 		var parentDn = scope.getDn();