When I create standard data file in Desfire EV1 card, I get 0x0E error

Question

• I'm using Desfire EV1 8K card. I create 10 applications inside it and create multiple files in that applications successfully.
• When I try to create first file of size 250 bytes in last application, it gives error 0x0E. But if I count total file sizes of previously created files, it's 6100 bytes.
• It means I have still 2092 (=8192(8KB)-6100) bytes to use for file. Please guide where I'm wrong.
• APDU command: CD 00 03 1111 FA0000
• Response: 0x0E (OUT_OF_EEPROM_ERROR)

Answer 1

您是否在计算中考虑过创建应用程序会产生一些开销，例如文件结构，但主要是每个应用程序的14个键？

Answer 2

I got the answer. If I check the FreeMemory of the card, I get the 0 bytes. The misunderstanding is, I was only calculating file sizes, but if I calculate the key bytes per application, the card is full with no memory left inside.