diff --git a/package.json b/package.json
index 9fc43d1e..ab02d5af 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "test:pool": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/pools/balancer/Pool.test.ts'",
     "test:dispenser": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/pools/dispenser/Dispenser.test.ts'",
     "test:dt": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/Datatoken.test.ts'",
-    "test:nftDt": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/NFT.test.ts'",
+    "test:nftDt": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/tokens/Nft.test.ts'",
     "test:factory": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/NFTFactory.test.ts'",
     "test:router": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/pools/Router.test.ts'",
     "test:unit": "mocha --config=test/unit/.mocharc.json --node-env=test --exit 'test/unit/**/*.test.ts'",
diff --git a/src/tokens/NFT.ts b/src/tokens/NFT.ts
index 35edcd4a..416a6c84 100644
--- a/src/tokens/NFT.ts
+++ b/src/tokens/NFT.ts
@@ -10,7 +10,7 @@ import { Contract } from 'web3-eth-contract'
  */
 interface Roles {
   manager: boolean
-  deployErc20: boolean
+  deployERC20: boolean
   updateMetadata: boolean
   store: boolean
 }
@@ -107,6 +107,9 @@ export class Nft {
     symbol?: string,
     templateIndex?: number
   ): Promise<string> {
+    if ((await this.getNftPermissions(nftAddress, address)).deployERC20 !== true) {
+      throw new Error(`Caller is not ERC20Deployer`)
+    }
     if (!templateIndex) templateIndex = 1
 
     // Generate name & symbol if not present
@@ -114,6 +117,7 @@ export class Nft {
       ;({ name, symbol } = generateDtName())
     }
 
+
     // Create 721contract object
     const nftContract = new this.web3.eth.Contract(this.nftAbi, nftAddress)
 
@@ -380,9 +384,10 @@ export class Nft {
     erc20Deployer: string
   ): Promise<TransactionReceipt> {
     const nftContract = new this.web3.eth.Contract(this.nftAbi, nftAddress)
-
-    if ((await this.getNftPermissions(nftAddress, address)).manager !== true) {
-      throw new Error(`Caller is not Manager`)
+    
+   
+    if ((await this.getNftPermissions(nftAddress, address)).manager !== true || address === erc20Deployer && (await this.getNftPermissions(nftAddress, address)).deployERC20 !== true) {
+      throw new Error(`Caller is not Manager nor ERC20Deployer`)
     }
     const estGas = await this.estGasRemoveErc20Deployer(
       nftAddress,
@@ -512,8 +517,8 @@ export class Nft {
     const nftContract = new this.web3.eth.Contract(this.nftAbi, nftAddress)
 
     
-    if ((await this.getNftPermissions(nftAddress, address)).manager !== true) {
-      throw new Error(`Caller is not Manager`)
+    if ((await this.getNftPermissions(nftAddress, address)).manager !== true || address !== metadataUpdater && (await this.getNftPermissions(nftAddress, address)).updateMetadata !== true) {
+      throw new Error(`Caller is not Manager nor Metadata Updater`)
     }
 
     const estGas = await this.esGasRemoveMetadataUpdater(
@@ -583,7 +588,7 @@ export class Nft {
     const nftContract = new this.web3.eth.Contract(this.nftAbi, nftAddress)
 
    
-    if ((await this.getNftPermissions(nftAddress, address)).manager !== true) {
+    if ((await this.getNftPermissions(nftAddress, address)).manager !== true ) {
       throw new Error(`Caller is not Manager`)
     }
 
@@ -648,8 +653,8 @@ export class Nft {
     const nftContract = new this.web3.eth.Contract(this.nftAbi, nftAddress)
 
   
-    if ((await this.getNftPermissions(nftAddress, address)).manager !== true) {
-      throw new Error(`Caller is not Manager`)
+    if ((await this.getNftPermissions(nftAddress, address)).manager !== true || address !== storeUpdater && (await this.getNftPermissions(nftAddress, address)).store !== true) {
+      throw new Error(`Caller is not Manager nor storeUpdater`)
     }
 
     const estGas = await this.estGasRemoveStoreUpdater(
diff --git a/test/unit/tokens/Nft.test.ts b/test/unit/tokens/Nft.test.ts
index 9a74b0c7..24fff69a 100644
--- a/test/unit/tokens/Nft.test.ts
+++ b/test/unit/tokens/Nft.test.ts
@@ -96,6 +96,27 @@ describe('NFT', () => {
     assert(erc20Address !== null)
   })
 
+  it('#createERC20 - should fail to create a new ERC20 DT if not ERC20Deployer', async () => {
+    try{( await nftDatatoken.createErc20(
+      nftAddress,
+      user1,
+      nftOwner,
+      user1,
+      user2,
+      '0x0000000000000000000000000000000000000000',
+      '0',
+      '10000',
+      nftName,
+      nftSymbol,
+      1
+    )) }catch(e) {
+      assert(e.message === 'Caller is not ERC20Deployer')
+    }
+    
+  })
+
+  
+
   // Manager
   it('#addManager - should add a new Manager', async () => {
     assert((await nftDatatoken.getNftPermissions(nftAddress, user1)).manager === false)
@@ -138,14 +159,19 @@ describe('NFT', () => {
     assert((await nftDatatoken.isErc20Deployer(nftAddress, user1)) === true)
   })
 
+  it('#addManager - should fail to add a new Manager, if NOT NFT Owner', async () => {
+    try {
+      await nftDatatoken.addManager(nftAddress, user1, user1)
+    } catch (e) {
+      assert(e.message === 'Caller is not NFT Owner')
+    }
+  })
+
   it('#addERC20Deployer - should fail to add ERC20deployer if NOT Manager', async () => {
     try {
       await nftDatatoken.addErc20Deployer(nftAddress, user1, user1)
     } catch (e) {
-      assert(
-        e.message ===
-          'Returned error: VM Exception while processing transaction: revert ERC721RolesAddress: NOT MANAGER'
-      )
+      assert(e.message === 'Caller is not Manager')
     }
   })
 
@@ -157,15 +183,25 @@ describe('NFT', () => {
     assert((await nftDatatoken.isErc20Deployer(nftAddress, user1)) === false)
   })
 
-  it('#removeERC20Deployer - should fail and remove ERC20deployer if NOT Manager', async () => {
+  it('#removeERC20Deployer - should fail and remove ERC20deployer if NOT Manager nor himself an ERC20Deployer', async () => {
+    await nftDatatoken.addErc20Deployer(nftAddress, nftOwner, user1)
+    assert((await nftDatatoken.isErc20Deployer(nftAddress, user1)) === true)
     try {
       await nftDatatoken.removeErc20Deployer(nftAddress, user1, user1)
     } catch (e) {
-      assert(
-        e.message ===
-          'Returned error: VM Exception while processing transaction: revert ERC721RolesAddress: Not enough permissions to remove from ERC20List'
-      )
+      assert(e.message === 'Caller is not Manager nor ERC20Deployer')
     }
+    assert((await nftDatatoken.isErc20Deployer(nftAddress, user1)) === true)
+  })
+
+  it('#removeERC20Deployer - should fail to remove himself an ERC20Deployer', async () => {
+    assert((await nftDatatoken.isErc20Deployer(nftAddress, user1)) === true)
+    try {
+      await nftDatatoken.removeErc20Deployer(nftAddress, user1, user1)
+    } catch (e) {
+      assert(e.message === 'Caller is not Manager nor ERC20Deployer')
+    }
+    assert((await nftDatatoken.isErc20Deployer(nftAddress, user1)) === true)
   })
 
   //  MetadataUpdate
@@ -185,10 +221,7 @@ describe('NFT', () => {
     try {
       await nftDatatoken.addMetadataUpdater(nftAddress, user1, user1)
     } catch (e) {
-      assert(
-        e.message ===
-          'Returned error: VM Exception while processing transaction: revert ERC721RolesAddress: NOT MANAGER'
-      )
+      assert(e.message === 'Caller is not Manager')
     }
   })
 
@@ -210,7 +243,7 @@ describe('NFT', () => {
     } catch (e) {
       assert(
         e.message ===
-          'Returned error: VM Exception while processing transaction: revert ERC721RolesAddress: Not enough permissions to remove from metadata list'
+        'Caller is not Manager nor Metadata Updater'
       )
     }
   })
@@ -228,10 +261,7 @@ describe('NFT', () => {
     try {
       await nftDatatoken.addStoreUpdater(nftAddress, user1, user1)
     } catch (e) {
-      assert(
-        e.message ===
-          'Returned error: VM Exception while processing transaction: revert ERC721RolesAddress: NOT MANAGER'
-      )
+      assert(e.message === 'Caller is not Manager')
     }
   })
 
@@ -249,7 +279,7 @@ describe('NFT', () => {
     } catch (e) {
       assert(
         e.message ===
-          'Returned error: VM Exception while processing transaction: revert ERC721RolesAddress: Not enough permissions to remove from 725StoreList'
+        `Caller is not Manager nor storeUpdater`
       )
     }
   })