diff --git a/src/controllers/endorser-transaction/EndorserTransactionController.ts b/src/controllers/endorser-transaction/EndorserTransactionController.ts
index e6d3dd72..6bbdfade 100644
--- a/src/controllers/endorser-transaction/EndorserTransactionController.ts
+++ b/src/controllers/endorser-transaction/EndorserTransactionController.ts
@@ -10,11 +10,12 @@ import {
 import { Agent } from '@credo-ts/core'
 import { injectable } from 'tsyringe'
 
-import { CredentialEnum } from '../../enums/enum'
+import { CredentialEnum, EndorserMode } from '../../enums/enum'
 import ErrorHandlingService from '../../errorHandlingService'
+import { BadRequestError } from '../../errors'
 import { DidNymTransaction, EndorserTransaction, WriteTransaction } from '../types'
 
-import { Body, Controller, Post, Res, Route, Tags, TsoaResponse, Security } from 'tsoa'
+import { Body, Controller, Post, Route, Tags, Security } from 'tsoa'
 
 @Tags('EndorserTransaction')
 @Route('/transactions')
@@ -31,6 +32,12 @@ export class EndorserTransactionController extends Controller {
   @Post('/endorse')
   public async endorserTransaction(@Body() endorserTransaction: EndorserTransaction) {
     try {
+      if (!endorserTransaction.transaction) {
+        throw new BadRequestError('Transaction is required')
+      }
+      if (!endorserTransaction.endorserDid) {
+        throw new BadRequestError('EndorserDid is required')
+      }
       const signedTransaction = await this.agent.modules.indyVdr.endorseTransaction(
         endorserTransaction.transaction,
         endorserTransaction.endorserDid
@@ -48,7 +55,7 @@ export class EndorserTransactionController extends Controller {
       const didCreateSubmitResult = await this.agent.dids.create<IndyVdrDidCreateOptions>({
         did: didNymTransaction.did,
         options: {
-          endorserMode: 'external',
+          endorserMode: EndorserMode.External,
           endorsedTransaction: {
             nymRequest: didNymTransaction.nymRequest,
           },
@@ -63,8 +70,6 @@ export class EndorserTransactionController extends Controller {
 
   @Post('/write')
   public async writeSchemaAndCredDefOnLedger(
-    @Res() forbiddenError: TsoaResponse<400, { reason: string }>,
-    @Res() internalServerError: TsoaResponse<500, { message: string }>,
     @Body()
     writeTransaction: WriteTransaction
   ) {
@@ -98,34 +103,42 @@ export class EndorserTransactionController extends Controller {
     },
     endorsedTransaction?: string
   ) {
-    try {
-      const { issuerId, name, version, attributes } = schema
-      const { schemaState } = await this.agent.modules.anoncreds.registerSchema({
-        options: {
-          endorserMode: 'external',
-          endorsedTransaction,
-        },
-        schema: {
-          attrNames: attributes,
-          issuerId: issuerId,
-          name: name,
-          version: version,
-        },
-      })
+    if (!schema.issuerId) {
+      throw new BadRequestError('IssuerId is required')
+    }
+    if (!schema.name) {
+      throw new BadRequestError('Name is required')
+    }
+    if (!schema.version) {
+      throw new BadRequestError('Version is required')
+    }
+    if (!schema.attributes) {
+      throw new BadRequestError('Attributes is required')
+    }
+    const { issuerId, name, version, attributes } = schema
+    const { schemaState } = await this.agent.modules.anoncreds.registerSchema({
+      options: {
+        endorserMode: EndorserMode.External,
+        endorsedTransaction,
+      },
+      schema: {
+        attrNames: attributes,
+        issuerId: issuerId,
+        name: name,
+        version: version,
+      },
+    })
 
-      const indySchemaId = parseIndySchemaId(schemaState.schemaId)
-      const getSchemaUnqualifiedId = await getUnqualifiedSchemaId(
-        indySchemaId.namespaceIdentifier,
-        indySchemaId.schemaName,
-        indySchemaId.schemaVersion
-      )
-      if (schemaState.state === CredentialEnum.Finished || schemaState.state === CredentialEnum.Action) {
-        schemaState.schemaId = getSchemaUnqualifiedId
-      }
-      return schemaState
-    } catch (error) {
-      throw ErrorHandlingService.handle(error)
+    const indySchemaId = parseIndySchemaId(schemaState.schemaId)
+    const getSchemaUnqualifiedId = await getUnqualifiedSchemaId(
+      indySchemaId.namespaceIdentifier,
+      indySchemaId.schemaName,
+      indySchemaId.schemaVersion
+    )
+    if (schemaState.state === CredentialEnum.Finished || schemaState.state === CredentialEnum.Action) {
+      schemaState.schemaId = getSchemaUnqualifiedId
     }
+    return schemaState
   }
 
   public async submitCredDefOnLedger(
@@ -138,30 +151,41 @@ export class EndorserTransactionController extends Controller {
     },
     endorsedTransaction?: string
   ) {
-    try {
-      const { credentialDefinitionState } = await this.agent.modules.anoncreds.registerCredentialDefinition({
-        credentialDefinition,
-        options: {
-          endorserMode: 'external',
-          endorsedTransaction: endorsedTransaction,
-        },
-      })
+    if (!credentialDefinition.schemaId) {
+      throw new BadRequestError('SchemaId is required')
+    }
+    if (!credentialDefinition.issuerId) {
+      throw new BadRequestError('IssuerId is required')
+    }
+    if (!credentialDefinition.tag) {
+      throw new BadRequestError('Tag is required')
+    }
+    if (!credentialDefinition.value) {
+      throw new BadRequestError('Value is required')
+    }
+    if (!credentialDefinition.type) {
+      throw new BadRequestError('Type is required')
+    }
+    const { credentialDefinitionState } = await this.agent.modules.anoncreds.registerCredentialDefinition({
+      credentialDefinition,
+      options: {
+        endorserMode: EndorserMode.External,
+        endorsedTransaction: endorsedTransaction,
+      },
+    })
 
-      const indyCredDefId = parseIndyCredentialDefinitionId(credentialDefinitionState.credentialDefinitionId)
-      const getCredentialDefinitionId = await getUnqualifiedCredentialDefinitionId(
-        indyCredDefId.namespaceIdentifier,
-        indyCredDefId.schemaSeqNo,
-        indyCredDefId.tag
-      )
-      if (
-        credentialDefinitionState.state === CredentialEnum.Finished ||
-        credentialDefinitionState.state === CredentialEnum.Action
-      ) {
-        credentialDefinitionState.credentialDefinitionId = getCredentialDefinitionId
-      }
-      return credentialDefinitionState
-    } catch (error) {
-      throw ErrorHandlingService.handle(error)
+    const indyCredDefId = parseIndyCredentialDefinitionId(credentialDefinitionState.credentialDefinitionId)
+    const getCredentialDefinitionId = await getUnqualifiedCredentialDefinitionId(
+      indyCredDefId.namespaceIdentifier,
+      indyCredDefId.schemaSeqNo,
+      indyCredDefId.tag
+    )
+    if (
+      credentialDefinitionState.state === CredentialEnum.Finished ||
+      credentialDefinitionState.state === CredentialEnum.Action
+    ) {
+      credentialDefinitionState.credentialDefinitionId = getCredentialDefinitionId
     }
+    return credentialDefinitionState
   }
 }
diff --git a/src/controllers/types.ts b/src/controllers/types.ts
index 6c460163..a4650b5e 100644
--- a/src/controllers/types.ts
+++ b/src/controllers/types.ts
@@ -340,6 +340,7 @@ export interface CreateInvitationOptions {
   invitationDid?: string
 }
 
+//todo:Add transaction type
 export interface EndorserTransaction {
   transaction: string | Record<string, unknown>
   endorserDid: string
@@ -350,6 +351,7 @@ export interface DidNymTransaction {
   nymRequest: string
 }
 
+//todo:Add endorsedTransaction type
 export interface WriteTransaction {
   endorsedTransaction: string
   endorserDid?: string