Error during reprojection of TerraSAR-X EEC product

[ABraun]

Level 1.5 data products (also EEC) are not supported in SNAP.
Please have a look at this topic (same case but for ALOS data), it also suggests a workaround:

ALOS-1 L1.5 Terrain Correction

Dear users, The ALOS-1 L1.5 images are already map projected (GRD), but are not terrain corrected (orthorectified). All the SNAP tools in “Terrain Correction” or “Elipsoid Correction” do not work with the L1.5 images and give as error: “Source product should not be map projected.” So, how may we orthorectify those images using SNAP? Best regards, Gustavo