> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/internal-developer-portal/3.0/troubleshooting-and-resources/knowledge-base/articles/register-multiple-components.md).

# Register Multiple Components Together

{% hint style="info" %}
This is relevant only to `IDP 1.0`; it won’t work with `IDP 2.0`.
{% endhint %}

#### Use the catalog API <a href="#use-the-catalog-api" id="use-the-catalog-api"></a>

Another effective approach is leveraging the catalog API. By running a custom script as shown in the example below, you can automate the registration of components, providing a more programmatic method for bulk registrations.

```shell
#!/bin/bash

set -e

function usage {
    echo "usage: $0 [-a accountIdentifier] [-x xApiKey] [-u bearerAuthorization] [-l catalogLocations]"
    echo "  -a      Harness Account Identifier"
    echo "  -x      Harness X-API-KEY for the given account"
    echo "  -u      Harness Bearer Authorization from the logged in session"
    echo "  -l      Catalog locations to be registered in Harness IDP. Comma separated list of locations"
    exit 1
}

while getopts a:x:u:l:h flag
do
    case "${flag}" in
        a) ACCOUNT_IDENTIFIER=${OPTARG};;
        x) X_API_KEY=${OPTARG};;
        u) BEARER_AUTHORIZATION=${OPTARG};;
        l) CATALOG_LOCATIONS=${OPTARG};;
        h | ?) usage
    esac
done

echo -e "\nStarting catalog location registration for given location in Harness IDP...";

CATALOG_LOCATION_REGISTER_DATA='{"type":"url","target":"CATALOG_LOCATION_TARGET"}'

for LOCATION in ${CATALOG_LOCATIONS//,/ }
do
    echo -e "\n--------"
    echo "Registering $LOCATION catalog location in Harness IDP account $ACCOUNT_IDENTIFIER"

    POST_DATA=${CATALOG_LOCATION_REGISTER_DATA/CATALOG_LOCATION_TARGET/$LOCATION}

    RESULT_HTTP_CODE=$(curl --write-out %{http_code} -s --output /dev/null -H "Content-Type: application/json" -H "Harness-Account: ${ACCOUNT_IDENTIFIER}" -H "x-api-key: ${X_API_KEY}" -H "Authorization: Bearer ${BEARER_AUTHORIZATION}" -X POST --data "${POST_DATA}" "https://idp.harness.io/${ACCOUNT_IDENTIFIER}/idp/api/catalog/locations")

    if [[ "$RESULT_HTTP_CODE" -ne 201 ]] ; then
        echo "Failed registering $LOCATION catalog location in Harness IDP account $ACCOUNT_IDENTIFIER"
    else
        echo "Successfully registered $LOCATION catalog location in Harness IDP account $ACCOUNT_IDENTIFIER"
    fi

    echo "--------"
done

echo -e "\nCompleted catalog location registration for given location in Harness IDP...";
```