Trying out again as we couldn't get a clear solution for this error/problem. Quite an annoying and weird error. This happens inside our process chain's DSO activation process.
1.) Data is coming from flatfiles (.csv).
2.) Fiscal Variant is maintained as constant in the transformation. Value: K4. (K4 is in T009 also.)
At first, we thought that this is a DSO problem but when we deleted the DSO data and push and activate data again (manually), we're not experiencing this error at all.
Maybe there is still something that we were not able to do or check. Can you please share your experience with this error and how did you solve this error. We would really appreciate it.