# Create time series reference values > Supported in: Batch, Streaming Creates time series reference values. **Expression categories:** String ## Declared arguments * **Series identifier:** The series identifiers contained in the time series sync.
*Expression\* * **Time series sync RID:** The resource identifier (RID) of the time series sync containing the series identifiers.
*Expression\* **Output type:** *String* ## Examples ### Example 1: Base case **Argument values:** * **Series identifier:** `seriesId` * **Time series sync RID:** ri.time-series-catalog.main.sync.11111111 | seriesId | **Output** | | ----- | ----- | | seriesOne | {"seriesId":"seriesOne","syncRid":"ri.time-series-catalog.main.sync.11111111"} | *** ### Example 2: Base case **Argument values:** * **Series identifier:** `seriesId` * **Time series sync RID:** `syncRid` | seriesId | syncRid | **Output** | | ----- | ----- | ----- | | seriesOne | ri.time-series-catalog.main.sync.11111111 | {"seriesId":"seriesOne","syncRid":"ri.time-series-catalog.main.sync.11111111"} | | seriesTwo | ri.time-series-catalog.main.sync.22222222 | {"seriesId":"seriesTwo","syncRid":"ri.time-series-catalog.main.sync.22222222"} | *** ### Example 3: Null case **Argument values:** * **Series identifier:** `seriesId` * **Time series sync RID:** ri.time-series-catalog.main.sync.11111111 | seriesId | **Output** | | ----- | ----- | | *null* | {"seriesId":"null","syncRid":"ri.time-series-catalog.main.sync.11111111"} | *** ### Example 4: Null case **Argument values:** * **Series identifier:** `seriesId` * **Time series sync RID:** *null* | seriesId | **Output** | | ----- | ----- | | seriesOne | {"seriesId":"seriesOne","syncRid":"null"} | ***