> For the complete documentation index, see [llms.txt](https://docs.inforiver.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.inforiver.com/formula-syntax/logical-functions/isrefexist.md).
# ISREFEXIST
Verifies whether a reference exists and returns a logical result.
The **ISREFEXIST** function returns TRUE if the specified reference exists in the model. It returns FALSE if the reference is invalid, missing, or does not exist. It is commonly used to validate references before applying calculations or logic.
### Syntax
ISREFEXIST(reference)
### Arguments
reference - The reference to validate. Required.
### **Return value**
Either TRUE or FALSE.
### **Example**
IF(ISREFEXIST([2027 Plan]), [2027 Plan], "Reference Does Not Exist")
In this example, the formula checks whether the reference '\[2027 Plan]' exists in the model. If TRUE, it returns the value of '\[2027 Plan]'. If FALSE, it returns 'Reference Does Not Exist'.
Applying ISREFEXIST function
### **Excel equivalent**
[ISREF](https://support.microsoft.com/en-us/office/is-functions-0f2d7971-6019-40a0-a171-f2d869135665)
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