Figure 6-208 API external client testing 3 Figure 6-209 API external client testing 4 5. If you provided the wrong username or password you receive a  401 Unauthorized “invalid_grant” response. Refer to Figure 6-209 on page 305. GLYPH<SM590000> X-IBM-Client-Id GLYPH<SM590000> X-IBM-Client-Secret GLYPH<SM590000> Authorization (Type as Bearer) 6. Next, use the API URL to test it, you must provide, The response is  200 OK , and you should receive the same response that you received in  the developer portal. See Figure 6-210 on page 306. Chapter 6. Practical agile integration  305