How to create a Second Generation managed package and install

 Hi ,

Here we are going to learn how to create a Second Generation Managed Package and how to install the same.

Before you create a Second Generation Managed Package , we have to complete the following things.

• Create a Developer Edition org if you don't have already and configure a name space 
• Now Enable DevHub and Second Generation package where you want to register your name space(If you are implementing AppExchange product then Salesforce Recommends to d the same in PBO org)

Now you are ready to create a Second Generation Managed Package.

• Authorize DevHub using the following command via command prompt or vs code

        sfdx force:auth:web:login -d -a DevHub

• Check you  sfdx-project.json and include your name. Here I have included name space called "Balu131"

       sfdx-project.json

    {

      "packageDirectories": [

         {

            "path": "force-app",

            "default": true                  

         }

         ],

       "namespace": "Balu131",

       "sfdcLoginUrl": "https://login.salesforce.com",

       "sourceApiVersion": "50.0"   

    }

• Create a package using the following command

        sfdx force:package:create --name "test2GPManged" --path force-app --packagetype Managed --            targetdevhubusername DevHub

        once it is completed then it adds the verionName,versionNumber and packageAliases to your            sfdx-project.json file.

       {

        "packageDirectories": [

          {

            "path": "force-app",

            "default": true,

            "package": "test2GPManged",

            "versionName": "ver 0.1",

            "versionNumber": "0.1.0.NEXT"

         }

       ],

       "namespace": "Balu131",

       "sfdcLoginUrl": "https://login.salesforce.com",

       "sourceApiVersion": "50.0",

       "packageAliases": {

          "test2GPManged": "0Ho09000000wk90CAA"

       }

    }

• Create a version using the following command

       sfdx force:package:version:create --package "test2GPManged" --installationkey test1234 --wait 10          -v DevHub

or 

       sfdx force:package:version:create --package "test2GPManged" --installationkey test1234 --wait 10      --codecoverage    -v DevHub

• Promote your package version (Note: to promote we always need to run test classes with the help of --codecoverage parameter while creating version above.

            sfdx force:package:version:promote -p test2GPManged@1.0.0-1 -v DevHub

• Install your managed package into destination org.

        sfdx force:package:install --package "test2GPManged@1.0.0-1" --targetusername       PackageDemoOrg --installationkey test1234 --wait 10 --publishwait 10

Reference:

https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_dev2gp.htm