System upgrade from very old v12.4.x to V15.0.4 errors and solutions in the construction of individual reports

today, it was found in a two-time development user that the system was upgraded from the older version. When users want to modify a report, they are prompted that a field already exists in the DataTable.
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Troubleshooting: The Business tables used in the report are normal when the content is built and previewed.
Considering that the new version adds the field settings for the business table, it is specifically to view the field settings for this business table and to find that the field names in the individual fields are null values.
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Add the empty value, after saving. To view the report design, you can design and use the report properly.
the current version can be adjusted according to this. Follow-up We will also check and test.

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Author: metric Technology http://www.delit.cn

System upgrade from very old v12.4.x to V15.0.4 errors and solutions in the construction of individual reports