In Jenkins declarative pipelines, the choice parameter is used to create a parameterized build that allows users to select a value from a predefined list of choices. This can be useful for customizing the behavior of your pipeline job based on user input.

We are unable to setting the default values directly in Jenkins pipelines. However, we can attain a similar effect by using a combination of conditional logic and environment variables.

In Jenkins declarative pipeline, you can define variables using the environment block or using the def keyword. The environment block is used to define environment variables that will be available to all steps in the pipeline, while the def keyword is used to define variables within individual stages or steps.

In Jenkins pipeline, you can use the sshPut step to copy the contents of a folder instead of the folder itself. The sshPut step is used to copy files or directories to a remote server over SSH.

The error message "NotSerializableException: groovy.json.internal.Lazymap" usually occurs in Jenkins pipelines when the pipeline code tries to serialize an object that is not serializable. This error typically indicates that the pipeline is trying to pass a non-serializable object to another stage or job&

To checkout a Git SCM repository in a Jenkins pipeline using credentials, you can use the with credentials block and the git step.

The "bad substitution" error in a Jenkins pipeline script typically occurs when you are using an unsupported or incorrect syntax for a shell variable expansion.