Solution : https://service.sap.com/sap/support/notes/165721 (SAP Service marketplace login required)
Key words : 
system generates message eq101, additional key words ecnc, configuration determination table, configuration determination pushbutton, data environment display, configuration instln_1 entered, configuration determination, data environment, transaction ecnc, configuration instln_1
Related Notes : 
       
| 173325 | Missing data environmt. definitions in IS-U/CCS 1.2 |