# Allow Zero or a greater then a cell value in data validation in excel 2019

#### hrdpgajjar

##### New Member
Hi all,
I have to enter data validation rule in a cell (i.e. Cell A1) that it allows value 0 (Zero) or number value greater then in cell B1. Data must be in decimal points.

The whole idea is i want cell A1 value not less then cell B1. But it can be zero (Cell A1= 0 or greater then B1)

help appreciated,

Thank you,

### Excel Facts

Round to nearest half hour?
Use =MROUND(A2,"0:30") to round to nearest half hour. Use =CEILING(A2,"0:30") to round to next half hour.

#### Peter_SSs

##### MrExcel MVP, Moderator
Welcome to the MrExcel board!

Does this custom formula for data validation do what you want?

Excel Formula:
``=AND(OR(A1=0,A1>B1),ISNUMBER(A1))``

#### hrdpgajjar

##### New Member
Welcome to the MrExcel board!

Does this custom formula for data validation do what you want?

Excel Formula:
``=AND(OR(A1=0,A1>B1),ISNUMBER(A1))``
Works like a charm.. Thanks for prompt reply... very happy

#### Peter_SSs

##### MrExcel MVP, Moderator
Works like a charm.. Thanks for prompt reply... very happy
You are welcome. Thanks for the follow-up.

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