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The merge request pipeline widget shows information about the pipeline status in a Merge Request. It's displayed above the [merge request ability to merge widget](#merge-request-ability-to-merge-widget).
There are several messages that can be displayed depending on the status of the pipeline.
After the pipeline is created, the message will update with the pipeline status.
## Merge request ability to merge widget
The merge request status widget shows the **Merge** button and whether or not a merge request is ready to merge. If the merge request can't be merged, the reason for this is displayed.
If the pipeline is still running, the **Merge** button is replaced with the **Merge when pipeline succeeds** button.
If [**Merge Trains**](merge_request_pipelines/pipelines_for_merged_results/merge_trains/index.md) are enabled, the button is either **Add to merge train** or **Add to merge train when pipeline succeeds**. **(PREMIUM)**
### "A CI/CD pipeline must run and be successful before merge"
This message is shown if the [Pipelines must succeed](../user/project/merge_requests/merge_when_pipeline_succeeds.md#only-allow-merge-requests-to-be-merged-if-the-pipeline-succeeds) setting is enabled in the project and a pipeline has not yet run successfully. This also applies if the pipeline has not been created yet, or if you are waiting for an external CI service. If you don't use pipelines for your project, then you should disable **Pipelines must succeed** so you can accept merge requests.
