diff --git a/SUMMARY.md b/SUMMARY.md
index 3e21ac02..cdc533cc 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -24,6 +24,7 @@
   * [Obtaining API key](building-with-ocean/obtaining-api-key.md)
   * [Using Ocean libraries](building-with-ocean/using-ocean-libraries/README.md)
       * [Configuration](building-with-ocean/using-ocean-libraries/configuration.md)
+      * [Creating a dataNFT](building-with-ocean/using-ocean-libraries/creating_dataNFT.md)
   * [Publish assets using hosting services](building-with-ocean/asset-hosting.md)
   * [Binance Smart Chain (BSC)](building-with-ocean/bsc-bridge.md)
   * [Set Up a Marketplace](building-with-ocean/marketplace.md)
diff --git a/building-with-ocean/using-ocean-libraries/configuration.md b/building-with-ocean/using-ocean-libraries/configuration.md
index e5e570d0..a4483a57 100644
--- a/building-with-ocean/using-ocean-libraries/configuration.md
+++ b/building-with-ocean/using-ocean-libraries/configuration.md
@@ -52,18 +52,20 @@ PROVIDER_URL=https://v4.provider.polygon.oceanprotocol.com
 {% code title=".env" %}
 ```
 # Mandatory environment variables
+OCEAN_NETWORK=development
 OCEAN_NETWORK_URL=http://172.15.0.3:8545/
 AQUARIUS_URL=http://172.15.0.5:5000
 PROVIDER_URL=http://172.15.0.4:8030
 
 # Replace PRIVATE_KEY if needed
 PRIVATE_KEY=0xc594c6e5def4bab63ac29eed19a134c130388f74f019bc74b8f4389df2837a58
-OCEAN_NETWORK=development
 ```
 {% endcode %}
 {% endtab %}
 {% endtabs %}
 
+_NOTE: If using ocean.py, additionally specify **ADDRESS_FILE** variable in the `.env` file. Copy the content of this [link](https://github.com/oceanprotocol/contracts/blob/v4main/addresses/address.json) locally and set the **ADDRESS_FILE** so that its value is a correct file path._
+
 #### Setup dependencies
 
 {% tabs %}
diff --git a/building-with-ocean/using-ocean-libraries/creating_dataNFT.md b/building-with-ocean/using-ocean-libraries/creating_dataNFT.md
new file mode 100644
index 00000000..796afc0f
--- /dev/null
+++ b/building-with-ocean/using-ocean-libraries/creating_dataNFT.md
@@ -0,0 +1 @@
+# Create a dataNFT
\ No newline at end of file