diff --git a/README.md b/README.md
index 1f74996..1c608eb 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,30 @@ Please refer to the [official documentation](documentation/occ.md) to get all de
 
 ## Install dependencies
 
-From your project's root run
+To ensure @isv-occ-payment packages are always resolved from the local workspace (and never fetched from the public npm registry), update your system .npmrc.
+
+Open the system .npmrc:
+
+Windows:
+
+```bash
+npm config edit
+```
+
+Mac:
+
+```bash
+open ~/.npmrc
+```
+
+
+Add the following configuration:
+```
+@isv-occ-payment:registry=http://localhost/
+```
+This ensures that if the local workspace package is missing, the installation will fail, instead of falling back to npm.
+
+Then, install dependencies from your project directory:
 
 ```bash
 yarn install
diff --git a/certs/localhost.crt b/certs/localhost.crt
deleted file mode 100644
index 1d63852..0000000
--- a/certs/localhost.crt
+++ /dev/null
@@ -1,18 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIC5TCCAc2gAwIBAgIJAOAposdL4tEtMA0GCSqGSIb3DQEBCwUAMBQxEjAQBgNV
-BAMMCWxvY2FsaG9zdDAeFw0yMDA3MjQxNDI5NDJaFw0yMDA4MjMxNDI5NDJaMBQx
-EjAQBgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
-ggEBALvoQ4eCzuATpFaELiBQxEa23dNmm2ZmGZIVI9wNwTH7pcK8Q01JmXDH1dP3
-dmLaMXYTeLKIjzjw9/s6CqR6oaaSgPalAsL7Z5KLjYUTJhhuOX244qpQfzJ4bMih
-g6Dk+iUXgA9nWJqgjluI28GO3/B553cGNeoJo5igOyVQDwloj3zLmXKtx4PPzXOW
-63kD/WSYeogBKXCvKlrhGMx6WhY/hy5dxoLiisIs6XveI8hIpzK8gEW59fiBsToh
-68EKnZ/TlXsQoNWXKZDT4QFEhT1IaJBZo5jw9H/uh1UXIMllBS0D8+UJ1lk1KGh0
-7tMTyVv2/IaVp6QSurJoBS0ScB0CAwEAAaM6MDgwFAYDVR0RBA0wC4IJbG9jYWxo
-b3N0MAsGA1UdDwQEAwIHgDATBgNVHSUEDDAKBggrBgEFBQcDATANBgkqhkiG9w0B
-AQsFAAOCAQEALas4CAKRhA4IYGO6InhYnNgdaRHqAIeZyqZdkms1juTnCH4tlzJN
-RuBB2NmzoGjSgNC7UDlMMHSP+QUXH1hfMQoSBo0smSisrdg71d6PrufuEwv4S8aH
-khKa3AOdhR1oPStuxHjgIMFYsA4LkuSrQnHG1k1fvkZJ6DFKssJ9gvKBhbVr8qih
-cJ0VR3wCL2/105QbaochS2iSQ05e77oOMFRhi9aLdQzYmRYFpSfeJI6oKewsvLbI
-+OqIjEv1SAhpLrixxXDnG6ckKaJJpc/zYvwUhdwfxikIy1Ev8QWJR54ksLDk956B
-wmhBloU+50ruGffwaBY21oR5tmR3T+jxsQ==
------END CERTIFICATE-----
diff --git a/certs/localhost.key b/certs/localhost.key
deleted file mode 100644
index c096664..0000000
--- a/certs/localhost.key
+++ /dev/null
@@ -1,28 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQC76EOHgs7gE6RW
-hC4gUMRGtt3TZptmZhmSFSPcDcEx+6XCvENNSZlwx9XT93Zi2jF2E3iyiI848Pf7
-OgqkeqGmkoD2pQLC+2eSi42FEyYYbjl9uOKqUH8yeGzIoYOg5PolF4APZ1iaoI5b
-iNvBjt/weed3BjXqCaOYoDslUA8JaI98y5lyrceDz81zlut5A/1kmHqIASlwrypa
-4RjMeloWP4cuXcaC4orCLOl73iPISKcyvIBFufX4gbE6IevBCp2f05V7EKDVlymQ
-0+EBRIU9SGiQWaOY8PR/7odVFyDJZQUtA/PlCdZZNShodO7TE8lb9vyGlaekErqy
-aAUtEnAdAgMBAAECggEAdQNXAgzgHMO+g62+N5t0DoETs/Bidyq/Y6vMb90U4LZP
-a+vmkTty1LtsmZmxXC95u4i2kZ7eaVwNYKGtPO2sulji/DSXeqopviUvFJ5vC6mg
-HX1DkUGdY+WAAJQrrsbISs7OjUkS8P9ohvG7v1XkeBDBpen1Ku+js4icLEklg/pJ
-kX3JjaLL87rQ7EO6JISoz10AV20M6fmBgq2OaYKMSTJojPcezaSAd3Lbrl4G6XZn
-NzOTaeHw3neJHgHe1Q4U/acWbQlraFnxu3V74SXVtjigL9kEL6EnXWGN6Xne+Flt
-2ZjPmdyxargYbzx1M8UjH0ylGuFKOQXigO4+OvI0AQKBgQDwDv9ZHsQSuBbv6p16
-ZPmggFgiGqtLyazfPv66wFOoM6zYuGnpib/vRmOlrhVu880uUIhEQdnxCZ5j0x5O
-vlapQemWots/sb3kcMyyueCO8BrGDHwlNyD0uaFD0jX0LbqTSydqX25XKIhds+i5
-0HgSD0ts3P8noNFeZdxOv2MhAQKBgQDIYrFXMiGv/M1Xj0ff3gUsVWU2bpgCtKy/
-d/MyYC0BsH+9OYDlewl9hMKz4plbfUz65x3xeOx0HCs5Cy+38LNTtYaonIE6QzXp
-qjXq3GWU1YWqPYBxRiwdkTC7rFTsfGZKF/d3FPVSZLLRrBrqzr4SqqhCVyRKSlNf
-big36sSzHQKBgQCJreBPabDEl6Y4FVQaRV1R6yog7TC/N7yZEVUhIHsaZgDFDwdX
-dLSK89DkzfHm/5b28CMnGql3b6/SytuAB/RGANKKnX6nijZBlVwhSS/8asLAQZrV
-8UdKdEiEUES3dZ6jKaBChtcOz+Vd8HgSUfj7SqBUoG8KeFZ8EGmJFIUzAQKBgCA+
-0W7IoGcjdR+r7NL3dTmnHDxgG5ID5PCCqt3mYBevgT6/7CABZouOO46a3ja8uRB+
-9HCRFuuwRLxPMoSU9SZ5RYwIczse6aQKQdbjVG1Y1sOIVgzkT+EKJh9tIdVUR1mQ
-9b9x3fA+SBA5c7NpRWjXkW/reemCgFwQ6+PjoXd5AoGBALyAwuxxxwAx30A3lc8t
-kF47SPAPP2q/+x5DbR3JKABriRq665ED47eqpaUDYAYLFmCb1U1xXVQrjdL6olQ8
-hka9LHptiAw8tX2ceGOxNDYApkZLNIEzCHSveSHLtCgOlRNH5/kf1WjNBK/6Y/w/
-s2sL8clIe/J59OfsIBdF0W4I
------END PRIVATE KEY-----
diff --git a/documentation/installation.md b/documentation/installation.md
index 6e6b608..9adfb8d 100644
--- a/documentation/installation.md
+++ b/documentation/installation.md
@@ -29,11 +29,14 @@ The following is required before going through installation steps:
 
 1. Yarn version: [1.22.4](https://classic.yarnpkg.com/en/docs/install/#mac-stable)
 2. NodeJS version: 18.16.1, You could use [NVM](https://github.com/nvm-sh/nvm) to manage multiple versions locally
-3. OCC environment
+3. Configure `.npmrc` to resolve `@isv-occ-payment` packages only from the local workspace.
+    - Add the following to your **global** `.npmrc` (via `npm config edit` on Windows or `open ~/.npmrc` on Mac):
+         ` @isv-occ-payment:registry=http://localhost/`
+4. OCC environment
     - OCC Admin interface: https://asbx80c1dev-admin-{env}.oraclecloud.com/occs-admin/
     - OCC Storefront: https://asbx80c1dev-store-{env}.oraclecloud.com
-4. [Application Key](https://docs.oracle.com/en/cloud/saas/cx-commerce/21d/ccdev/register-applications.html)
-5. User credentials for OCC Admin
+5. [Application Key](https://docs.oracle.com/en/cloud/saas/cx-commerce/21d/ccdev/register-applications.html)
+6. User credentials for OCC Admin
 
 
 Install all the dependencies by running `yarn install` from the project's root.