Merge pull request #989 from egovernments/ISTE-371

Added changes to allow Advance in electricity bill from pspcl

municipal-services/echallan-services/src/main/java/org/egov/echallan/validator/ChallanValidator.java

@@ -91,7 +91,7 @@ public void validateFields(ChallanRequest request, Object mdmsData) {
 		 */
 
 		if (!currentTaxHeadCodes.isEmpty() && !requiredTaxHeadCodes.isEmpty()) {
-			if (!currentTaxHeadCodes.containsAll(requiredTaxHeadCodes))
+			if (!(currentTaxHeadCodes.stream().anyMatch(requiredTaxHeadCodes::contains)))
 				errorMap.put("INVALID_TAXHEAD_CODE_DETAILS",
 						"Mandatory taxhead codes details are not present in request for provided business service");
 		} else