https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82991#M34332 Greetings, I came a cross issue that my head just cant decrypt at all. I want to add Fields in column like Column 1 to 12 but every time i want to add Column1 i got error that it`s already is there. Although if i add row in initial values ill get column1 as unkown data type but i did not even added that column in the fields in the first place. I will attach error. Maybe it will help more than what i wrote. " An error occurred while trying to save the collection field: The field 'Column1' already exists in this collection definition BluePrism.BPCoreLib.AlreadyExistsException: The field 'Column1' already exists in this collection definition at BluePrism.AutomateProcessCore.clsCollectionInfo.RenameField(String oldname, String newname) at BluePrism.AutomateProcessCore.clsCollection.RenameField(String oldname, String newname) at BluePrism.AutomateProcessCore.Stages.clsCollectionStage.ModifyFieldOperation(CollectionDelegateParams params) at BluePrism.AutomateProcessCore.clsCollection.PerformNestedValueOperation(CollectionDelegateParams params, NestedValueOperation op) at BluePrism.AutomateProcessCore.Stages.clsCollectionStage.PerformNestedFieldOperation(CollectionDelegateParams params, NestedValueOperation op) at BluePrism.AutomateProcessCore.Stages.clsCollectionStage.HandleFieldModified(clsCollectionInfo defn, clsCollectionFieldInfo oldFld, clsCollectionFieldInfo newFld) at BluePrism.AutomateProcessCore.clsCollectionInfo.OnFieldModified(clsCollectionInfo defn, clsCollectionFieldInfo oldFld, clsCollectionFieldInfo newFld) at BluePrism.AutomateProcessCore.clsCollectionFieldInfo.SetFrom(clsCollectionFieldInfo fld) at Automate.clsCollectionFieldListRow.EndEdit(ctlEditableListRow editRow) " Thank you Have a nice day/night Best Regards Vladimirs Thu, 05 Oct 2017 19:38:00 GMT VladimirsCivcis 2017-10-05T19:38:00Z https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82991#M34332 Greetings, I came a cross issue that my head just cant decrypt at all. I want to add Fields in column like Column 1 to 12 but every time i want to add Column1 i got error that it`s already is there. Although if i add row in initial values ill get column1 as unkown data type but i did not even added that column in the fields in the first place. I will attach error. Maybe it will help more than what i wrote. " An error occurred while trying to save the collection field: The field 'Column1' already exists in this collection definition BluePrism.BPCoreLib.AlreadyExistsException: The field 'Column1' already exists in this collection definition at BluePrism.AutomateProcessCore.clsCollectionInfo.RenameField(String oldname, String newname) at BluePrism.AutomateProcessCore.clsCollection.RenameField(String oldname, String newname) at BluePrism.AutomateProcessCore.Stages.clsCollectionStage.ModifyFieldOperation(CollectionDelegateParams params) at BluePrism.AutomateProcessCore.clsCollection.PerformNestedValueOperation(CollectionDelegateParams params, NestedValueOperation op) at BluePrism.AutomateProcessCore.Stages.clsCollectionStage.PerformNestedFieldOperation(CollectionDelegateParams params, NestedValueOperation op) at BluePrism.AutomateProcessCore.Stages.clsCollectionStage.HandleFieldModified(clsCollectionInfo defn, clsCollectionFieldInfo oldFld, clsCollectionFieldInfo newFld) at BluePrism.AutomateProcessCore.clsCollectionInfo.OnFieldModified(clsCollectionInfo defn, clsCollectionFieldInfo oldFld, clsCollectionFieldInfo newFld) at BluePrism.AutomateProcessCore.clsCollectionFieldInfo.SetFrom(clsCollectionFieldInfo fld) at Automate.clsCollectionFieldListRow.EndEdit(ctlEditableListRow editRow) " Thank you Have a nice day/night Best Regards Vladimirs Thu, 05 Oct 2017 19:38:00 GMT https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82991#M34332 VladimirsCivcis 2017-10-05T19:38:00Z https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82992#M34333 I suspect this is because you have created an initial row and then added/removed more columns. It's probably a bug, but through experience I just try to avoid doing this. Just set the columns up first, then add the initial row(s). Or, delete all initial/current rows before modifying the columns - I think the trouble is that the column definition/initial row column structure/current row column structure get out of sync. Fri, 06 Oct 2017 18:47:00 GMT https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82992#M34333 John__Carter 2017-10-06T18:47:00Z https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82993#M34334 Yes it`s was a bug indeed. We had to refresh and reset and after that even restart BP in order to fix it. It`s all came to simple solution to * did you turn it on and off * kinda one. Thank you for the reply. Mon, 09 Oct 2017 14:42:00 GMT https://community.blueprism.com/t5/Product-Forum/Assigning-Column-Fields/m-p/82993#M34334 VladimirsCivcis 2017-10-09T14:42:00Z