Assistance Required: Unexpected Error During FBDI Maintenance Asset

We are currently facing an issue while attempting to upload a maintenance asset file via FBDI in the Dev instance. The scenario is as follows:

1. I uploaded data for a newly created DFF field.
2. The first line was successfully uploaded; however, for the second line, I encountered an error in a column for which no data was filled.

Typically, this particular error arises when incorrect or non-adjacent data is entered in relation to the DFF field.
However, in this case, no data was entered in the mentioned column, yet the same error is being returned.
This unexpected behavior is blocking our ability to upload the data successfully, which is critical for our production instance.