diff --git a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/plugins/GenericTechnology.js b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/plugins/GenericTechnology.js
index c584143546b787412059d6b628b6684c451b5a51..0040c1e8a14a38ad46b3cd617237cc4fa6e91c0b 100644
--- a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/plugins/GenericTechnology.js
+++ b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/plugins/GenericTechnology.js
@@ -47,7 +47,7 @@ $.extend(GenericTechnology.prototype, ELNLIMSPlugin.prototype, {
 			"SAMPLE_PARENTS_HINT" : [{
 				"LABEL" : "Requests",
 				"TYPE": "REQUEST",
-				"MIN_COUNT" : 0,
+				"MIN_COUNT" : 1,
 				"ANNOTATION_PROPERTIES" : []
 			}]
 		},
diff --git a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/views/SampleForm/SampleFormController.js b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/views/SampleForm/SampleFormController.js
index 0807d14d68b4e1acb29a10c7b9845d006689fb41..ce8566caaa2d5380113c6732b914f08737d66123 100644
--- a/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/views/SampleForm/SampleFormController.js
+++ b/openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/js/views/SampleForm/SampleFormController.js
@@ -184,17 +184,23 @@ function SampleFormController(mainController, mode, sample, paginationInfo) {
 			//
 			if(sample.sampleTypeCode === "REQUEST") {
 				var maxProducts;
+				var minProducts;
 				if(profile.sampleTypeDefinitionsExtension && 
 					profile.sampleTypeDefinitionsExtension["REQUEST"] && 
 					profile.sampleTypeDefinitionsExtension["REQUEST"]["SAMPLE_PARENTS_HINT"] && 
 					profile.sampleTypeDefinitionsExtension["REQUEST"]["SAMPLE_PARENTS_HINT"][0]) {
 					maxProducts = profile.sampleTypeDefinitionsExtension["REQUEST"]["SAMPLE_PARENTS_HINT"][0]["MAX_COUNT"];
+					minProducts = profile.sampleTypeDefinitionsExtension["REQUEST"]["SAMPLE_PARENTS_HINT"][0]["MIN_COUNT"];
 				}
 				
 				if(maxProducts && (sampleParentsFinal.length + newSampleParents.length) > maxProducts) {
 					Util.showUserError("There is more than " + maxProducts + " product.");
 					return;
 				}
+				if(minProducts && (sampleParentsFinal.length + newSampleParents.length) < minProducts) {
+					Util.showUserError("There is less than " + maxProducts + " product.");
+					return;
+				}
 			}
 			
 			//