Not possible to set max occurrences to zero

Signed-off-by: MichaelMorris <michael.morris@est.tech>
Issue-ID: SDC-3711
Change-Id: I512abaca1defade0bee259b330eca2fea322eaf7
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ResourceImportManager.java b/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ResourceImportManager.java
index 4f65230..1503835 100644
--- a/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ResourceImportManager.java
+++ b/catalog-be/src/main/java/org/openecomp/sdc/be/components/impl/ResourceImportManager.java
@@ -844,7 +844,7 @@
                 log.debug("Invalid occurrenses format.  Max occurrence is {}", maxObj);
                 throw new ByActionStatusComponentException(ActionStatus.INVALID_OCCURRENCES);
             }
-            if (maxOccurrences <= 0 || maxOccurrences < minOccurrences) {
+            if (maxOccurrences < 0 || maxOccurrences < minOccurrences) {
                 log.debug("Invalid occurrenses format.  min occurrence is {}, Max occurrence is {}", minOccurrences, maxOccurrences);
                 throw new ByActionStatusComponentException(ActionStatus.INVALID_OCCURRENCES);
             }