html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/6345#issuecomment-1065424051,https://api.github.com/repos/pydata/xarray/issues/6345,1065424051,IC_kwDOAMm_X84_gRSz,62192187,2022-03-11T19:28:18Z,2022-03-11T19:31:18Z,CONTRIBUTOR,"So it looks like changing 

https://github.com/pydata/xarray/blob/d293f50f9590251ce09543319d1f0dc760466f1b/xarray/backends/api.py#L1280-L1301

to

```python
def _validate_datatypes_for_zarr_append(store, dataset):
    """"""DataArray.name and Dataset keys must be a string or None""""""

    def check_dtype(vname):
        store_dtype = store.get_variables()[vname].dtype
        dataset_dtype = dataset[vname].dtype
        if not store_dtype == dataset_dtype:
            raise ValueError(
                f""Mismatched dtypes for variable {vname} between Zarr store on disk ""
                f""and dataset to append. Store has dtype {store_dtype} but dataset to ""
                f""append has dtype {dataset_dtype}.""
            )

    for vname in dataset.data_vars:
        check_dtype(vname)
```
could work?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1164454058