diff --git a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalIdConfiguration.java b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalIdConfiguration.java
index 5907302f9..bbff36782 100644
--- a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalIdConfiguration.java
+++ b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalIdConfiguration.java
@@ -12,6 +12,7 @@
 import org.springframework.context.annotation.Configuration;
 
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.Map;
 
 @Configuration
@@ -22,13 +23,17 @@ public class ApprovalIdConfiguration {
 
     private Class generatorClass;
     private Map<String, Object> parameters;
+    private Map<String, Boolean> validators;
 
     @Bean
     @ConditionalOnMissingBean
     public ApprovalService defaultApprovalService(SubstanceApprovalIdGenerator approvalIdGenerator,
                                                   SubstanceRepository substanceRepository,
                                                   PrincipalRepository principalRepository){
-        return new DefaultApprovalService(approvalIdGenerator, substanceRepository, principalRepository);
+        if (validators == null) {
+            validators = new HashMap<String, Boolean>();
+        }
+        return new DefaultApprovalService(approvalIdGenerator, substanceRepository, principalRepository, validators);
 
     }
     @Bean
diff --git a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalService.java b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalService.java
index 8dc6df367..8b78056a4 100644
--- a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalService.java
+++ b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/ApprovalService.java
@@ -9,6 +9,8 @@
 
 public interface ApprovalService {
 
+    boolean isApprovable(Substance s);
+
     ApprovalResult approve(Substance s) throws ApprovalException;
 
     @Data
diff --git a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/DefaultApprovalService.java b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/DefaultApprovalService.java
index 9ecfdaa83..38bdde042 100644
--- a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/DefaultApprovalService.java
+++ b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/approval/DefaultApprovalService.java
@@ -13,6 +13,8 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Optional;
 
 /**
@@ -38,13 +40,24 @@ public class DefaultApprovalService implements ApprovalService{
 
     private PrincipalRepository principalRepository;
 
+    private Map<String, Boolean> validators;
+
     @Autowired
     public DefaultApprovalService(SubstanceApprovalIdGenerator approvalIdGenerator,
                                   SubstanceRepository substanceRepository,
-                                  PrincipalRepository principalRepository) {
+                                  PrincipalRepository principalRepository,
+                                  Map<String, Boolean> validators) {
         this.approvalIdGenerator = approvalIdGenerator;
         this.substanceRepository = substanceRepository;
         this.principalRepository = principalRepository;
+        Map<String, Boolean> vMap = new HashMap<String, Boolean>();
+        vMap.put("allowLastEditor", validators.getOrDefault("allowLastEditor", Boolean.FALSE));
+        vMap.put("allowCreator", validators.getOrDefault("allowCreator", Boolean.FALSE));
+        vMap.put("allowNonPrimary", validators.getOrDefault("allowNonPrimary", Boolean.FALSE));
+        vMap.put("allowConcept", validators.getOrDefault("allowConcept", Boolean.FALSE));
+        vMap.put("allowDependsOnNonPresent", validators.getOrDefault("allowDependsOnNonPresent", Boolean.FALSE));
+        vMap.put("allowDependsOnNonApproved", validators.getOrDefault("allowDependsOnNonApproved", Boolean.FALSE));
+        this.validators = vMap;
     }
 
     /**
@@ -100,30 +113,52 @@ protected void defaultApprovalValidation(Substance s, String usernameOfApprover)
             throw new ApprovalException(
                     "There is no last editor associated with this record. One must be present to allow approval. Please contact your system administrator.");
         } else {
-            if (s.lastEditedBy.username.equals(usernameOfApprover)) {
-                throw new ApprovalException(
+            if (validators.get("allowLastEditor") == Boolean.FALSE && s.lastEditedBy.username.equals(usernameOfApprover)) {
+                if (!(validators.get("allowCreator") == Boolean.TRUE && s.createdBy != null && s.createdBy.username.equals(usernameOfApprover))) {
+                    throw new ApprovalException(
                         "You cannot approve a substance if you are the last editor of the substance.");
+                }
             }
         }
-        if (!s.isPrimaryDefinition()) {
+        if (validators.get("allowNonPrimary") == Boolean.FALSE && !s.isPrimaryDefinition()) {
             throw new ApprovalException("Cannot approve non-primary definitions.");
         }
-        if (Substance.SubstanceClass.concept.equals(s.substanceClass)) {
+        if (validators.get("allowConcept") == Boolean.FALSE && Substance.SubstanceClass.concept.equals(s.substanceClass)) {
             throw new ApprovalException("Cannot approve non-substance concepts.");
         }
         for (SubstanceReference sr : s.getDependsOnSubstanceReferences()) {
             Optional<SubstanceRepository.SubstanceSummary> s2 = substanceRepository.findSummaryBySubstanceReference(sr);
-            if (!s2.isPresent()) {
+            if (validators.get("allowDependsOnNonPresent") == Boolean.FALSE && !s2.isPresent()) {
                 throw new IllegalStateException("Cannot approve substance that depends on " + sr.toString()
                         + " which is not found in database.");
             }
-            if (!s2.get().isValidated()) {
+            if (validators.get("allowDependsOnNonApproved") == Boolean.FALSE && !s2.get().isValidated()) {
                 throw new IllegalStateException(
                         "Cannot approve substance that depends on " + sr.toString() + " which is not approved.");
             }
         }
     }
 
+    /**
+     * Check if the given Substance is approvable by the user invoking this method.
+     * @param s the Substance to approve.
+     * @return a true if the user invoking this method is able to approve given Substance.
+     */
+    @Override
+    public boolean isApprovable(Substance s) {
+        String userName = GsrsSecurityUtils.getCurrentUsername().orElse(null);
+        if (userName == null) {
+            return false;
+        }
+        try {
+            defaultApprovalValidation(s, userName);
+            extraApprovalValidation(s, userName);
+            return true;
+        } catch (ApprovalException ex) {
+            return false;
+        }
+    }
+
     /**
      * Try to approve the given Substance.  The user invoking this method
      * must have Approver Role.
diff --git a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/controllers/SubstanceController.java b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/controllers/SubstanceController.java
index 1df712628..282cf9f68 100644
--- a/gsrs-module-substances-core/src/main/java/gsrs/module/substance/controllers/SubstanceController.java
+++ b/gsrs-module-substances-core/src/main/java/gsrs/module/substance/controllers/SubstanceController.java
@@ -1036,6 +1036,17 @@ public void saveTempStructure(Structure s) {
 
     }
 
+    @GetGsrsRestApiMapping(value={"({id})/@isApprovable", "/{id}/@isApprovable" })
+    public ResponseEntity isApprovableGetMethod(@PathVariable("id") String substanceUUIDOrName, @RequestParam Map<String, String> queryParameters) throws Exception {
+        Optional<Substance> substance = getEntityService().getEntityBySomeIdentifier(substanceUUIDOrName);
+
+        if(!substance.isPresent()){
+            return getGsrsControllerConfiguration().handleNotFound(queryParameters);
+        }
+        boolean approvable = approvalService.isApprovable(substance.get());
+        return new ResponseEntity<>(String.valueOf(approvable), HttpStatus.OK);
+    }
+
     @Transactional
     @GetGsrsRestApiMapping(value={"({id})/@approve", "/{id}/@approve" })
     @hasApproverRole