Hi All,
I have three output streams in my workflow for three different cases. I have to output them in 3 different sheets of the same excel.
I have used three Block Until Done tools in the following way:

First time when I ran it, it gave the output as desired in three different sheets in the same excel file.
However, the next time I ran it, it gave an error. I have tried some fixes like keeping no space between sheet names. The path of the file is also correct.
The errors keep changing and I get the output file but only one or two of the sheets are there. The errors also keep changing.
Error: Output Data (95): Unable to open file for write: - Attempt to open a file that is already open: The process cannot access the file because another process has locked a portion of the file. (33)
Unable to create backup of UBR.xlsx.bak: Access is denied. (5)
Can someone please help me on how to fix these errors? Or, can recommend any other way to get the desired output?