ck11n srtructure for internal activity

Dear Gurus,

While doing ck11n iam able to estimate the cost but getting an green message the message is below

DIAMOND BIKE ZMCO CK 694 No structure could be determined for internal activity 502000 (1200) 1

No structure could be determined for internal activity 500000 (1200)

No structure could be determined for internal activity 501000 (1200) 3

No structure could be determined for internal activity 502000 (1300) 7

No structure could be determined for internal activity 500000 (1300)

No structure could be determined for internal activity 501000 (1300) 9

No structure could be determined for internal activity 503000 (1400) 10

where am i going wrong?