diff --git a/src/SASjs.ts b/src/SASjs.ts
index 01c00b5..8fd5cde 100644
--- a/src/SASjs.ts
+++ b/src/SASjs.ts
@@ -1,4 +1,4 @@
-import { compareTimestamps, asyncForEach } from './utils'
+import { compareTimestamps, asyncForEach, validateInput } from './utils'
 import {
   SASjsConfig,
   UploadFile,
@@ -686,7 +686,7 @@ export default class SASjs {
       ...config
     }
 
-    const validationResult = this.validateInput(data)
+    const validationResult = validateInput(data)
 
     // status is true if the data passes validation checks above
     if (validationResult.status) {
@@ -748,74 +748,6 @@ export default class SASjs {
     }
   }
 
-  /**
-   * This function validates the input data structure and table naming convention
-   *
-   * @param data A json object that contains one or more tables, it can also be null
-   * @returns An object which contains two attributes: 1) status: boolean, 2) msg: string
-   */
-  private validateInput(data: { [key: string]: any } | null): {
-    status: boolean
-    msg: string
-  } {
-    if (data === null) return { status: true, msg: '' }
-
-    const isSasFormatsTable = (key: string) =>
-      key.match(/^\$.*/) && Object.keys(data).includes(key.replace(/^\$/, ''))
-
-    for (const key in data) {
-      if (!key.match(/^[a-zA-Z_]/) && !isSasFormatsTable(key)) {
-        return {
-          status: false,
-          msg: 'First letter of table should be alphabet or underscore.'
-        }
-      }
-
-      if (!key.match(/^[a-zA-Z_][a-zA-Z0-9_]*$/) && !isSasFormatsTable(key)) {
-        return { status: false, msg: 'Table name should be alphanumeric.' }
-      }
-
-      if (key.length > 32) {
-        return {
-          status: false,
-          msg: 'Maximum length for table name could be 32 characters.'
-        }
-      }
-
-      if (this.getType(data[key]) !== 'Array' && !isSasFormatsTable(key)) {
-        return {
-          status: false,
-          msg: 'Parameter data contains invalid table structure.'
-        }
-      }
-
-      for (let i = 0; i < data[key].length; i++) {
-        if (this.getType(data[key][i]) !== 'object') {
-          return {
-            status: false,
-            msg: `Table ${key} contains invalid structure.`
-          }
-        }
-      }
-    }
-
-    return { status: true, msg: '' }
-  }
-
-  /**
-   * this function returns the type of variable
-   *
-   * @param data it could be anything, like string, array, object etc.
-   * @returns a string which tells the type of input parameter
-   */
-  private getType(data: any): string {
-    if (Array.isArray(data)) {
-      return 'Array'
-    } else {
-      return typeof data
-    }
-  }
-
   /**
    * Creates the folders and services at the given location `appLoc` on the given server `serverUrl`.
    * @param serviceJson - the JSON specifying the folders and services to be created.
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 065dd87..62ceb97 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,20 +1,21 @@
+export * from './appendExtraResponseAttributes'
 export * from './asyncForEach'
 export * from './compareTimestamps'
 export * from './convertToCsv'
 export * from './createAxiosInstance'
 export * from './delay'
+export * from './fetchLogByChunks'
+export * from './getValidJson'
 export * from './isNode'
 export * from './isRelativePath'
 export * from './isUri'
 export * from './isUrl'
 export * from './needsRetry'
 export * from './parseGeneratedCode'
-export * from './parseSourceCode'
 export * from './parseSasViyaLog'
+export * from './parseSourceCode'
+export * from './parseViyaDebugResponse'
+export * from './parseWeboutResponse'
 export * from './serialize'
 export * from './splitChunks'
-export * from './parseWeboutResponse'
-export * from './fetchLogByChunks'
-export * from './getValidJson'
-export * from './parseViyaDebugResponse'
-export * from './appendExtraResponseAttributes'
+export * from './validateInput'
diff --git a/src/utils/validateInput.ts b/src/utils/validateInput.ts
new file mode 100644
index 0000000..6f1774d
--- /dev/null
+++ b/src/utils/validateInput.ts
@@ -0,0 +1,90 @@
+export const MORE_INFO =
+  'For more info see https://sasjs.io/sasjs-adapter/#request-response'
+export const INVALID_TABLE_STRUCTURE = `Parameter data contains invalid table structure. ${MORE_INFO}`
+
+/**
+ * This function validates the input data structure and table naming convention
+ *
+ * @param data A json object that contains one or more tables, it can also be null
+ * @returns An object which contains two attributes: 1) status: boolean, 2) msg: string
+ */
+export const validateInput = (
+  data: { [key: string]: any } | null
+): {
+  status: boolean
+  msg: string
+} => {
+  if (data === null) return { status: true, msg: '' }
+
+  if (getType(data) !== 'object') {
+    return {
+      status: false,
+      msg: INVALID_TABLE_STRUCTURE
+    }
+  }
+
+  const isSasFormatsTable = (key: string) =>
+    key.match(/^\$.*/) && Object.keys(data).includes(key.replace(/^\$/, ''))
+
+  for (const key in data) {
+    if (!key.match(/^[a-zA-Z_]/) && !isSasFormatsTable(key)) {
+      return {
+        status: false,
+        msg: 'First letter of table should be alphabet or underscore.'
+      }
+    }
+
+    if (!key.match(/^[a-zA-Z_][a-zA-Z0-9_]*$/) && !isSasFormatsTable(key)) {
+      return { status: false, msg: 'Table name should be alphanumeric.' }
+    }
+
+    if (key.length > 32) {
+      return {
+        status: false,
+        msg: 'Maximum length for table name could be 32 characters.'
+      }
+    }
+
+    if (getType(data[key]) !== 'Array' && !isSasFormatsTable(key)) {
+      return {
+        status: false,
+        msg: INVALID_TABLE_STRUCTURE
+      }
+    }
+
+    for (const item of data[key]) {
+      if (getType(item) !== 'object') {
+        return {
+          status: false,
+          msg: `Table ${key} contains invalid structure. ${MORE_INFO}`
+        }
+      } else {
+        const attributes = Object.keys(item)
+        for (const attribute of attributes) {
+          if (item[attribute] === undefined) {
+            return {
+              status: false,
+              msg: `A row in table ${key} contains invalid value. Can't assign undefined to ${attribute}.`
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return { status: true, msg: '' }
+}
+
+/**
+ * this function returns the type of variable
+ *
+ * @param data it could be anything, like string, array, object etc.
+ * @returns a string which tells the type of input parameter
+ */
+const getType = (data: any): string => {
+  if (Array.isArray(data)) {
+    return 'Array'
+  } else {
+    return typeof data
+  }
+}