https://community.blueprism.com/t5/Product-Forum/Supplies-a-blank-Expression-to-argument-Attribute-Identifier/m-p/123329#M53986 <P>If you've built objects on older versions of BP and now they have the following errors:<BR /><STRONG>Row x supplies a blank expression to argument 'Attribute Identifier'&nbsp;</STRONG><BR /><BR />Simply click on the area you would think you write text and its actually a dropdown menu and from what I've built can see it normally matches the above value.<BR /><BR />Also you may see another error:<BR /><STRONG>Row x does not supply a value to the compulsory parameter</STRONG><BR /><BR />This is normally on the Wait which I found just reselecting the values "Check Exists" etc normally clears this error.<BR /><BR /></P> Thu, 23 Oct 2025 07:41:06 GMT greggoodrem 2025-10-23T07:41:06Z https://community.blueprism.com/t5/Product-Forum/Supplies-a-blank-Expression-to-argument-Attribute-Identifier/m-p/123329#M53986 <P>If you've built objects on older versions of BP and now they have the following errors:<BR /><STRONG>Row x supplies a blank expression to argument 'Attribute Identifier'&nbsp;</STRONG><BR /><BR />Simply click on the area you would think you write text and its actually a dropdown menu and from what I've built can see it normally matches the above value.<BR /><BR />Also you may see another error:<BR /><STRONG>Row x does not supply a value to the compulsory parameter</STRONG><BR /><BR />This is normally on the Wait which I found just reselecting the values "Check Exists" etc normally clears this error.<BR /><BR /></P> Thu, 23 Oct 2025 07:41:06 GMT https://community.blueprism.com/t5/Product-Forum/Supplies-a-blank-Expression-to-argument-Attribute-Identifier/m-p/123329#M53986 greggoodrem 2025-10-23T07:41:06Z