https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55162#M9553 Hi Shashank,<BR /><BR />thank you for your reply, but in my case I am&nbsp;able to append rows with no fields defined in another action but in different action I couldn't be able to do it. I wonder why it is working irregularly.<BR />is there any alternative to append rows from one collection to other without using this VBO action?<BR /><BR />Thanks<BR />Kumar​<BR /><BR />------------------------------<BR />Kumar Babu K<BR />Senior Software Engineer<BR />wipro technologies<BR />Asia/Kolkata<BR />------------------------------<BR /> Wed, 18 Sep 2019 06:25:00 GMT Kumar_BabuK 2019-09-18T06:25:00Z https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55160#M9551 ​Hi Everyone,<BR /><BR /> while appending two collections am getting the above mentioned error.I have same set of column names and data in both collections.this error is not occurring at same collection set when I run , also this is happening while I try to append a row of values to the collection with 0 rows.Quit a few times it ran successfully but it throws error also at other times.not sure where it is wrong.can someone help me<BR /><BR />The error is&nbsp; "System Exception : Field definitions do not match - the number of columns in each is different"<BR /><BR />Thanks<BR />Kumar<BR /><BR />------------------------------<BR />Kumar Babu K<BR />Senior Software Engineer<BR />wipro technologies<BR />Asia/Kolkata<BR />------------------------------<BR /> Tue, 17 Sep 2019 15:28:00 GMT https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55160#M9551 Kumar_BabuK 2019-09-17T15:28:00Z https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55161#M9552 Hi Kumar Babu,<BR /><BR />Before running the append collection action, check to make sure the fields in the two collections are defined and same. You can get this error if you have 0 rows but no field defined in one of the collections.<BR /><BR />------------------------------<BR />Shashank Kumar<BR />DX Integrations Partner Consultant<BR />Blue Prism<BR />Asia/Singapore<BR />+6581326707<BR />------------------------------<BR /> Tue, 17 Sep 2019 15:57:00 GMT https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55161#M9552 shashank.kumar280 2019-09-17T15:57:00Z https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55162#M9553 Hi Shashank,<BR /><BR />thank you for your reply, but in my case I am&nbsp;able to append rows with no fields defined in another action but in different action I couldn't be able to do it. I wonder why it is working irregularly.<BR />is there any alternative to append rows from one collection to other without using this VBO action?<BR /><BR />Thanks<BR />Kumar​<BR /><BR />------------------------------<BR />Kumar Babu K<BR />Senior Software Engineer<BR />wipro technologies<BR />Asia/Kolkata<BR />------------------------------<BR /> Wed, 18 Sep 2019 06:25:00 GMT https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55162#M9553 Kumar_BabuK 2019-09-18T06:25:00Z https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55163#M9554 Hi Kumar Babu,<BR /><BR />Alternatively you can try to use Add Row &amp; Multi Calc action within a loop to append rows from main collection to another collection.<BR /><BR />------------------------------<BR />Shashank Kumar<BR />DX Integrations Partner Consultant<BR />Blue Prism<BR />Singapore<BR />+6581326707<BR />------------------------------<BR /> Wed, 18 Sep 2019 17:00:00 GMT https://community.blueprism.com/t5/Product-Forum/Error-while-apending-two-colelctions/m-p/55163#M9554 shashank.kumar280 2019-09-18T17:00:00Z