Hello colleagues , I am a beginner in EWM. Previously I was an SAP developer across all modules. Now I would like to deal with EWM not only functionally (customizing too) but also technically. what do you recommend to me? what should I start with...

I am need to add entries to table zproduct_espr using CDS view Z_I_PRODUCT_ESPR . But I am getting error Creating operations are disabled for entity '$AE_UIX#SRVD#ZSRV_RATING~Z_C_RATING_MO'I need Help please. Thank you