# S04003 {#s04003}

## Error Code {#error_code .section}

S04002

## Error Message {#error_message .section}

`The parameter objs must be a string that begins with 'dfs://' and ends with '*'. For example, 'dfs://db1*'. RefId: S04003`

## Probable Causes {#probable_causes .section}

For function `grant`, when the *accessType*is DB\_OWNER, *objs*can be specified as a prefix rule to limit the databases that the user can create and manage. This error occurs when granting the DB\_OWNER privilege with invalid string patterns. The *objs* that the DB\_OWNER privilege applies to must begin with 'dfs://' and end with '\*', such as dfs://db1\*.

## Solutions {#solutions .section}

Check the prefix and suffix of the *objs* parameter and retry.

**Parent topic:**[Error Code Reference](../../Troubleshooting/ErrorCode.md)

