Seeing Value too long messages for backendMetricName attribute

Document ID : KB000072829
Last Modified Date : 09/03/2018
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Issue:
  After fixing the issue in KD 000046879, getting these warning messages: 
2/26/18 09:34:49.456 PM UTC [WARN] [AppMapAsyncExecutor-3] [Manager.AppMap] Vertex with id 4371628 has too long value (Backends|ABCD Services - Test|Route via HTTP(S)|https://gateway.123z.com:9442/abc/persons/person/personID/?pid=c685fade-1803-4bce-81ba-40f653fa34f8%2cdb5b1207-5332-4467-8dee-007ece4f8e59%2c3b3f3d4c-6616-4626-9d9e-04d5f95c74f8%2c9abafa4a-53b3-4d4a-87bc-0687b440de1d%2c9fb4f0ad-c410-4be3-902a-06e7dc217b65%2c93449d82-bfd3-4f0c-867f-07c5c7591ca8%2c65e20df5-61ce-4d0b-ad7d-0ac1c7a16c1a%2c99d5a79f-03e0-4e9a-bae6-0ad0ce4ebe17%2cea242c6e-2c48-4cdd-8377-0cc103de4be2%2cbb8f1411-ae1c-4e64-89d0-0ce465533f1f%2cbea03a06-60ee-4de9-b8eb-0e0c85e91575%2c035e7855-510d-4e3e-a11b-0f861d9ad25c%2cef96cc80-c209-478e-b655-11250a1828c0%2c3aa3fe67-39d4-4af0-956d-134731652707%2c1f064028-77f2-45bd-90b1-134a42cc63e0%2ccc3a602a-38b3-449e-b549-14f77bcbb3f8%2cc133fe0f-a1ae-4aaf-80a1-1739cea1727a%2caafe09a4-d434-4a69-b2df-1758b331cfe1%2c59baea75-aa16-43ff-bcb5-1855900b0d92%2cf2d6bb6d-fcf1-405a-9c6f-18b99277851e%2c88a616d0-513d-4632-afdc-194676083d40%2cc40cf79b-d5a9-4e92-b3ea-1a904ffca5a4%2cdaf370f6-b657-484f-a056-1ab5657db90e%2c21219783-f2f9-41a2-9b66-1aed1e18ed55%2c160eb6af-e28c-4ca8-8b3d-1b5afabba593%2c34056444-78d0-4e75-8aab-1ba8db73ab72%2c1cbfb629-dc7e-4566-a1f1-1c850f1ca540%2c14c9726f-2972-4a4d-ab45-1d8c00dad300%2c7c349df6-6f17-4eae-b6a3-1ddad61f394d%2c0275e716-99da-40df-9ec1-1f7cdd831621%2c7759175c-c16a-444b-a4cc-1fd8a1e1926e%2c86fdc386-a9d4-4725-a827-1ff2a316da1e%2cedef79b7-4c6e-413f-afda-2285728331a7%2c0f4f3878-68e3-4087-9ef9-22c5594d6e96%2c05fea81e-17ae-4c11-9c77-231e687f6726%2c0e0bf0c4--a7c9-2b5585c09e87%2c914e04d4-6b42-49d5-a1df-2b5fb37fb638%2c925ace52-707c-4298-a982-2b638ab94ced%2ca1c093e2-5cb2-4f4b-8332-2bf80e46acac&flat=1) for attribute backendMetricName. The value will be shrinked


This is coming from an APIM agent


How do I resolve the error?
Environment:
  This was found in APM 10.2 but could impact any supported APM/APIM combination. APIM release is 9.3 CR1,
Cause:
APM Engineering confirmed this is hardcoded in the code to check and make sure the Attribute String is no longer than 2048, before writing to the database. It is not configurable at this time. 
Resolution:
The best workaround is to reduce the size of the string being sent by the APIM agent. (Such as through shortened URLS or normalization.)